Yeah, i think so too. Just wondered what Roachor ment by saying, that the first sneak counts.
I could test this, I have melee character for Sledge hammer, but not now. Interesting question, though knock-back occurs only in conjunction with knockouts or knockdowns, so the chance will be equal or less than the chance to produce those kind of effects.Are you asking this because knock-backs don't always occur with knockouts and knockdowns? Sometimes doing only KO's or KD's? I really don't remember.
so i thought I could have an SD sneaker with sledge and crit knock them away and resneak
Just to elaborate on ghost, it only works within 5 hexes of an object
and it can't push your sneak over 300. If your sneak and ghost add up to 300 you will have 264 sneak with a 2 handed weapon, 234 when out of cover.