HtH evade does not work, at all.
My character is jinxed, and had HtH evade, but when it turned out that the perk doesnt work at all, i rerolled...
And from my experience, jinxed works on all combatants, like my friend droped his gun constantly, and rats fighting each other got many random cripplings. At least in encounter...Not sure about towns tho, but once a guy tried to shoot me, and got a weapon destroyed XD
If it does work for the whole town, its OP...
Maybe its based on FOV(perception), just a tip...That would be the best logical way of implementing it without beeing OP imo..