[Brut]

Can't beg from engaged mobs, so doubt it gives any aggro nor can it give the critical fail mid-combat.

Capped it on blue, it doesn't really work any more frequently at high skills, doesn't give more money, doesn't give you more successful begs than critical fails. It's still cute if you're a FD class to get the beg message out of random animals and NPCs to provide comic relief to nearby elves.

With CoS you can also drop invis, beg, reinvis before server tic to aggro. Got some silver off Spiroc Lord once.