Let us know! I'm considering picking up a VP9 which is the next iteration of the P30, to use as my primary carry gun instead of my USPc .40. H&K's are great weapons.
To my wife's dismay, I have a HK45, and just got both a P30 in V2 and the VP9 both in 9mm, I pre-ordered the VP9 but also found a local P30 at a great price the same week the VP9 shipped.
I love both of the 9s, for carry I prefer the VP9's grip surface, it's grippy without being abrasive, the P30 has heine sights on it which I think is the main reason I shoot better with the VP9.