I tried pocket carry a few times but always had issues with the draw and the gun snagging on the way out. Not a big deal with my 442 with smooth wood grips but with anything else with real sights or a rubbery grip, never worked for me.
The VP9SK is an excellent gun for carry and if you can manage pocket carry, more power to you. I would be leery about a soft holster protecting the trigger in my pocket though. If it were me, I would try to get, if they make them, a kydex holster like a Vedder Pocket Locker or some other sort. Just my 2 cents