Just wanted to note that I have switched to 120 Swords on my char, and have 120 Fencing on a SoulStone.
Since my primary Leafblade is a UBWS, I can have swords on the char for using Soulseeker AND still use my Leafblade for the feints.
Just a little weapon talk... The reason Soulseeker is such a coveted blade is that it has no damage increase. That allows 5 other properties to be on the weapon.
HML, HSL, HLL, Slayer, SSI
Finding weapons that allow 5 properties is actually a lot harder then you realize. The only real source is loot. And then you have to get one that has either NO properties at all, or ones that have a desired property regardless of it's level.
I don't know how many Leafblades I have looted that have no damage, but have FC 1 on it. In my case that steals one property that I could use.
If you make a blade, you'll get the extra 50 points to imbue for it being exceptional, but you will always have damage increase on it.
Here's what I'd consider good on Sammy and Whammy weaps.
Hit Stamina Leech - I'll start with this. Both types of chars require hitting to live. The Sammy uses Vamp Emb to leech life (with a boost from CW if needed) and the Whammy relies on CW. Defense is the lifeblood of the chars allowing them to stay in against monsters. You WILL get hit and when you do your Stamina WILL go down. If you aren't equipped to quickly recover it you will start swinging slower, hitting less and failing to leech back vital hit points and you will eventually die. Either have a weapon with HSL or use a one hander and total refresh pots.
Swing Speed Increase - There are charts available to determine weapon speed with different stamina levels. I like to use 90 as my breakpoint, so I'll get enough weapon speed to swing 1.25 or 1.5 at 90 stamina. For me that usually means 20+ depending on the weapon. Again, hitting is how the char stays alive. I tried using the 30 SSI Ornate Axe method that people were doing. You do MEGA damage and leech back HUGE points of HP, Stam, or Mana... the problem is that even with 30 SSI your still swinging relatively slow, and God forbid you miss more then 2 in a row... that's a death sentence against many high level monsters. I've always been a fan of the "mid level" damage weapons. Leafblades for fencing and Radiant Scims for swords (I don't do much macing). They offer the ability to get really good swing rates while providing a decent damage.
Hit Mana Leech - Whammy's don't need it as much because of the Wraith mana leeching, but it's still very nice to have for the additional leech. HML is mandatory for a Sammy.
Hit Life Leech - Sammy's don't need it as much because of the Vamp life leeching, but it's still very nice to have for the additional leech. HLL is HIGHLY recommended for a Whammy to augment CW life leeching. When your Whammy gets mana vamped three times in a row and you can't get off a CW you'll really appreciate having HLL on your weapon.
Slayer - This ones last because it's the most complicated and may not be necessary. If you get a Super Slayer it will eat into the total imbue points more then a specific slayer. Super Slayers do DOUBLE damage against all monsters in the group. Specific slayers do TRIPLE damage against that specific monster. The reason it's complicated is that you may not need double or triple damage. There's a cap of 100% from gear. You also have strength, tactics, anatomy etc.... and there's EoO, slayer and perfection. The total is 300%. If you can already get to 300% without using a slayer, then really your wasting a spot. If you do a lot of spawn and such then it might be worth having slayer because it caps you out much earlier.
So the perfect weapon would have:
Hit Stamina Leech
Swing Speed Increase
Hit Mana Leech
Hit Life Leech
Slayer
And here's a couple of options to consider:
Hit Stamina Leech
Swing Speed Increase
Hit Mana Leech
Hit Life Leech
Hit Lower Attack*
For Whammy
Hit Stamina Leech
Swing Speed Increase
Hit Lower Attack*
Hit Life Leech
Slayer
For Sammy
Hit Stamina Leech
Swing Speed Increase
Hit Mana Leech
Hit Lower Attack*
Slayer
*Hit Lower Attack may or may not work well with Hit Lower Defense. There are some *cough* Twinkle McNugget *cough* that think that it's one or the other and never both at the same time. I've looked and haven't found anything to say yes or no to this. We all know that doesn't mean it's not true LOL. I personally haven't used the two together, but believe that they both would work.