Most holster makers don't seem to have a kydex holster made for the VP9sk-B that covers or partially covers the mag. release button,let alone other makes/models, that I have searched for. Not sure why, unless it is not that popular yet or an asked for feature. I prefer a holster that will partially cover the mag. release, as Murphy's Law can happen and fortunately, I only had it happen once on holster I carried. I got rid of it soon after. I have bought many types of holsters- kydex, half breed kydex/leather, kydex foam,etc., from many makers and spent a good amount of money trying to find the right one.
Oddly enough I bought/tried an inexpensive iwb kydex from a vendor on Amazon- "Warriorland", that makes holsters that partially cover the mag. release and I am quite pleased with them. Unfortunately, I don't see one for a vp9sk-B but you might want to reach out to them and see if they could make one.