I had a unicycle that was powdercoated. Took it on some MTB trails and urban riding, and despite my best efforts, the frame still came crashing into pavement more than once.

Never got a scratch, to my knowledge.

Sold it to buy a different uni, so can't check now.

I recently did a rattle-can job on a different unicycle. It doesn't scratch easily, but does flake off if hit with another metal object. Powdercoating, IMO is definitely worth it.

Does anyone know if a powdercoat finish is available in a black matte?