Another thought: If you want something truly unique and MTB-ish, look for a set of Redline Forklifter bars. They're actually a BMX bar but came in a low-rise (at least for BMX) 3.5" version and are kinda cool looking. 4-pice bar with fat bulges in bead-blast tapering down to polished, normal diameter at the control ends. They look like a flatter version of these and came in some cool ano colors:
