Those aren't a bad idea. A good mic stand that isn't going to fall apart/slip is gonna cost you between 30 and 50 bucks anyways, and if you are strapped for room, it seems like a good idea. I'm actually considering a pair of those right now. (only since you brought them up."
You could always mask out on the cab where you would put it, then mask a tiny like square where you normally point it too. That way when you move your cab you always get the rough same tone. there might be similar stuff on the market with more traditional clips, instead of slipping on the full cab. These look sturdy though.