Yes, also for centerpulls. Made by CLB I think, but I'm not too sure so maybe someone here can correct that. I've only seen them on French bikes.

They work well, but the plating is crap so they rust pretty fast. Excellent for a bike that doesn't have a QR anywhere else. You know how some centerpulls or cantis, if they're adjusted tight it can be hard to disconnect the straddle to get the wheel out? Also this style could let you keep riding with a bent wheel or broken spoke.

Dia-Compe's version is nicer looking, alloy with better-plated steel hardware, but this one works just as well. Maybe better since I don't like straddle yokes that use a pulley, just inelegant design IMHO, dumb place for a pulley. Not that it hurts the function really, both designs work great.