"Guitars are bourgeois, OK? They're expensive and the skill they demand is elitist!"
"We should be making music with computers! They're the populist medium of today!"
Mind you, computers are bourgeois and expensive too; the iBooks that all the inner city hipster kids have certainly are. Though maybe it's more authentic if you shlep along a battered beige box that looks like it was stolen out of an office and souped up numerous times, running Windows 98 and AudioMulch (or better: Linux and some home-brewed audio software; it's not going to sound as slick as Cubase, but slickness is bourgeois). Having to lug that and a 15" glass bottle to see what's going on bespeaks punk authenticity and commitment to one's art, in a way you can never get with an Apple PowerBook.
(Of course, there's no way you could carry a PC/monitor to gigs on a bicycle. Then again, real proles drive, usually battered Mazdas or Holden panelvans. Cycling everywhere is a bourgeois affectation, like vegetarianism. Discuss.)
(Btw, Graham: any ideas on how one could combine tracker modules and live performance? Perhaps a tracker with keyboard-controlled mutes/cuepoints/sample triggers could be useful for that...)