I tried it a few times but never did feel comfortable,especially while sitting.I suppose it just takes getting used to.I also have the M&P 45c as well as the full sized M&P 40 that I use for house guns.
I prefer something smaller in physical size that I can pocket carry.
As far as the holster type,I tried an "Uncle Mikes" number 15(Inside the pant holster) for both the M&P's and a few other ones I have tried as well.