Yeah, but how small? There are so many pocket able variations of 1 or 2 cells of CR123, AA, and AAA. Some feel naked without a 2 cell CR123 Surefire light, and some can go with a SSC or Cree powered AAA light.
I didn't answer, because none really apply. If it's small enough for my pocket, that's about all I really care about. Plain jane isn't so much a factor as size (although scalloped edge and anti-roll knurling is probably a negative for me for chewing up pockets).