rure said:Backslash is in the slash line, so you would loose alot of damage using that (if you even get it, I think its 44 slash for back slash). But any style in the slash line gets reduced damag, which is why you only have to use dw-styles.
Backslash is lvl39 slash spec style but it does not matter.
For Backslash style dmg the same rules are applied as for DS. It means that full weapon spec is good to have at least for 2 positional styles - frontal and back.
Shadow Edge (DW) - 0.6gr
Divine Hammer (Crush) - 0.7gr
Back Slash (Slash) - 0.85gr
Pierce (Thrust) - 0.75 gr
If you'd like to have stun why don't you spec crush?