I was carrying an HK USPc45 for a while - and one day I laid it up against my Beretta 92. The grip was about the same length. I bought a Comptac Pro Undercover holster for it, and have been carrying the 92FS everyday for the past 18 months. I even carried it thru the summer.
Last April (2010), I bought an HK P2000 to be a summer gun, as the only issue with carrying the 92 IWB is rusting grip screws. However, CDNN routinely sells NP3 covered grip screws. Once I bought a set - no more rusting grip screws. I never did use the P2000, and ended up selling it later.
I am 185lbs and 6'1" - so I am not a big guy. I carry it at the 3 o'clock position. Even with a t-shirt, as long as the shirt is good quality and is not a $5 super tight wal-mart special, I can carry it in the summer.
Comptac replaced the Pro undercover with the Infidel. it is the exact same holster - only now, the belt clip part is replaceable. It is permanently affixed to the holster in the Pro Undercover version. I occasionally carry my M9A1, and I have a pro undercover for it. I am lucky I ordered it when I did, because now that they have replaced the pro undercover with the infidel, they no longer make a version for a railed Beretta 92 (M9A1).
I love the platform so much that I have 8 of them..
Here is a pic of my carry gear and guns :)
