StreamOfTheSky
Adventurer
Mind you, the strategy isn't foolproof (the words "Steadfast Determination", "incoporeal" and "immunity to ability damage" come to mind) but it should work on most of the enemies you come across. Well worth the price of one feat and having to act like a goodie two shoes.
Yeah. It shouldn't be your main tactic or anything, far from foolproof. But if you're going to be trying to "touch" things (hopefully evil, at that) with your fists 3-5 times a round anyway, it certainly is nice to have.
Just don't shake hands or grope people unless you're absolutely clear about their alignment. Paralyzing shopkeepers and the town guard probably isn't a good thing...
Yeah, I recall that as written, you can't turn it off, which I suppose is fair...
I got it for my VoP Druid. She also took the Touch of Healing reserve feat and operated a clinic with her VoP Monk significant other for anyone to come and get free healing. She always warned beforehand, "If you're evil, this may sting a little."

(In the end, worst it does is paralyze, not kill, so it's still not exactly vile to golden ice someone as you're healing them.)