I remember electronica noise band Add N to (X) using one in their live shows (along with whatever electronic junk they could scavenge, it looked like they had patch panels on guitar straps). TBH I'm not sure if they had an actual tour van or just raided skips near Radioshacks.

Here's a clip - you can see what looks like an OM-100 at 9 1/2 minutes in on... Robot New York I think? It's all stuff off their Avant Hard album anyway. https://www.youtube.com/watch?v=d9mM_ynzOtU

They were very entertaining live but I'm glad there's footage of them without the dodgy films they projected on the side wall on that tour.