Not sure where you heard that a PM9 was only good for a couple thousand rounds....Jocko has run over 30,0000 rounds through his.....soooooooooooo I'd say when you get your PM9, shoot it as much as you want, especially if that's going to be your actual carry weapon. I don't think you can wear out that little bugger.
Kahr P380 (part owner)
Kahr PM9
Kahr PM45
Kahr MK9 Elite 03
Springfield XDs .45 3.3
Springfield XDm .40 Compact 3.8
Springfield XDm 9mm 3.8
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote."
.....Benjamin Franklin