FWIW, MrsGGB bought some of those camisol tank top things with the spaghetti straps, and wore one without a shirt over it this summer. All I can say is BOING. Yup, that got me going, and I let her know that she looked hot in it. I certainly wouldn't classify as VC's top of the line, and probably wouldn't register as sexy lingerie in any magazine, but she does look hot in them. To each his own.
Anyway, if that's what floats his boat, then run with it...or run in it