Benchmades, from what I hear, are okay to flick.
Microtech makes mostly OTF autos.
Wrist flicking is dangerous anyway. In a high-stress situation, the adrenaline will boost gross motor strength (so you'll throw the blade more strongly than you intend to) and suppress fine motor control (so your knife will fly from your fingers into the ground or an innocent bystander). Thumb openings are just as fast and provide a much more secure grip.
Having said that, I also have to admit that wrist flicking feels pretty good and macho.