I took out half the pins on one side for grinding, and the pedal body has held up great! They're grippy, and I've never slipped a pedal.
Nothing at all. If you're going to bitch about them being too heavy, go ride a scooter.
I've had these pedals for about 7 months, and they've held up great! So far they've survived numerous stair sets, a 7 foot drop and a 10 foot drop. They're definitely worth the money.