Good on ya' mate. Yeah twists look fine. On my HTPC machine I didn't bother sleeving it either, just left the wires flat and exposed.

There's some good cable management stuff, requires some cutting, in the following worklogs (warning, heaps of pics!!!)
WORKLOG: GAM's HTPC - Simple Modding Make-Over
WORKLOG: GAM'S 'Main' PC - Chieftec BX-01 (56K WARNING!)

Good luck!