One half inch, one way or the other, doesn't affect concealibility. Its width and height that have more of an affect. I too prefer full-size handguns whenever possible. A quality holster, a belt intended for concealed carry and the avoidance of hip-hugger trousers go a long way in allowing the carrying of a full size gun with relative comfort.
My carry guns include a Browning Hi-power and a Glock 19. The Glock isn't exactly full size but close.
I have the M&P .45. It it is my go-to gun for home defense, Its equipped with a red-laser sight.