For HK-specific feedback you should also check in over at http://www.hkpro.com/forum/" onclick="window.open(this.href);return false;
Lots of people carrying the P30. You just need to find the position/holster/dress combination that works for you.
Buying the gun is the smallest cost you'll have. Ammo, holsters, training. The gun is the cheap part.
Anyone here have less than 5 holsters they never use?
Good luck and welcome.!