It is very thin and does disappear. I have a M.I.C. holster for my G27 and can pocket carry it in certain pants and shirt combinations. M.I.C. makes a holster for the Shield that would probably be a breeze to conceal.
As to the round count, I'm not overly concerned on that one. The 9mm will hold 7+1 with the flush magazine or 8+1 with the extended magazine. With some good self defense rounds, I'm not really worried about losing a couple rounds.
