Your friend might take a look at the Alessi MOB - I carry a 4516-2 and a P220 in two of these rigs, and find it to be very comfortable. The Talon clip is behind the trigger guard, so the added width is only two thicknesses of leather. It rides slick side out, so there is less tendency to gather wrinkles in shirt material, and when worn more strong-side than MOB, the rake keeps the gun off tired hip muscles. The "hang" off the Talon clip is such that the bun butt is pulled into the side, and even the "big butt" P220 stays close under a tail-out sport shirt without printing.
