I've never shot the P9S, but my P7M8 is easily one of my favorite handguns. Yes, it's a little unusual, but the fact is, it's also pretty natural, after you try it. HK really produced a gem in the P7 series, and the gun is easily my most accurate handgun. It's also very controllable, and not too hard to conceal.
No longer made, the gun is very pricey though, as I'm sure you know. The current wave of P7 PSP imports is probably going to dry up soon, and with it, their low prices (if you can call 500 for a used gun "low").
HKPro and Park Cities Tactical websites are where most of the P7 junkies hang out...