I've got a buddy that carries a Kel-Tec P3AT as a BUG on duty. He swears by that little bastard.

I opted for a G27 to supplement my G22. Yeah, it felt a little bulky for the first night I wore it, but it got used to it quickly.

If your friend is dead set on carrying a .380, why not check out a PPK?

Not to hijack, but if Glock would make a "Slimeline" subcompact in .40, I'd buy one.