about that weapon on-hit effects didn't work (as you said in another thread). They work fine on regular attacks (at least in the EE).
Well, it is a some time but ... .
Weapon has a chance like 5% for Knock
That chance is checked against Bodybuilding
early game On hit effects comes around 6 level and are about 2-5%
Which means any opponent who is One level higher OR has One point in Bodybuilding ALWAYS resist. e.g. 99% of all opponents ALWAYS resists
Later in game is situation even worst. Becouse oponents have 3-8 saving throws, but On hit effect do not go over 30% or so. e.g. 99,9999 % oponents always resist.
I have made 3 full game runs and one part run, but applications of On hit effect was less than 20times at all. That means, in my book, On hit effects dont work.