I wear one from time to time with my Marine dress blues for certain formal events, e.g. as the adjutant at the Birthday Ball, as a groomsman for a Marine wedding, etc. The current Sam Browne is Corfram, basically patent leather, instead of the regular leather version that was used last century and is only worn by officers. My understanding is that other branches of the U.S. military do not use it.

I'm not trying to be offensive, and this is merely my personal opinion, but I think it would be a little ridiculous to wear a Sam Browne belt unless it was as part of an authorized uniform, maybe as part of a colorguard or the like.

I think part of the reason that non-kilt wearers see the kilt as a "costume" vice an article of clothing is because of "accessories" that are often paired with it. I haven't seen anyone walk around with a military dirk while wearing a business suit, the same goes for the Sam Browne. By going with a "kitchen sink" accessories approach you often overwhelm the beauty of a kilt.

If you're looking for a variety of quality leather belt options, I'd suggest Occonee Leatherworks. They have a wide variety of styles and colors.

Cordially,
David