Congrats on your new camera ...
Likewise with the M9 I obtained recently, I notice that other people make a bigger deal of owning one than I do. To me it's just a camera, albeit an expensive one that I thought about for quite a while before plunking down the cash. I guess the reaction comes with the price territory.
I find the M9 a little difficult to hold securely, particularly when it is cold out and my hands are cold, because of its smooth shape. I tried Steve's Thumbie and it helped, but it's really not my thing ... I rarely use the film wind lever on my film M as a thumb rest. The solution for me is a leather half-case, which makes the camera much more grip-able (and less cold to the touch on those early morning shoots...). It is a bit more work to get the bottom plate off and get to the card or battery. Plusses and minuses.
I've only used a couple of lenses on the M9 so far. The 21 and 28 Skopars work beautifully but benefit from using CornerFix on raw files quite a lot. The M-Rokkor 40 and Nokton 40 work very nicely, with or without a lens code. I just received a Nokton 50/1.5 and find it produces very nice results with or without a lens code too.
Very nice body, great lenses from CV, Zeiss or Leica ... closest thing to my favorite film M I can get ... no complaints here.
Enjoy using it!