I wanted a 4" PC Shield .45 for a long time. I was hesitant because of a lack of holsters for it, and bought a standard Shield .45 3.3" I was perfectly content with that one until this thread popped up. I did find that more holsters seem to be available for the 4" model, so had a LGS order one for me. I picked it up last Monday and finally got to put a few rounds of 230 gr HST's thru it. I'm always amazed at how Smith & Wesson can make guns that small pleasant to shoot.
Both of the .45 Shields I have now need to have some more carry ammo put thru them, but I'm sure they will enter the carry rotation very soon.
Gun forums have proven to be the most expensive things on the internet for me.