I've been looking at both these options, the e609 and the Cab clip on mic stands. I'd like to get a decent one for my SM57 since I don't move it at all, and the floor stand is kind of a pita, in my setup.
I hear ya on that - the floor stand holds the SM57 well, but its kind of awkward and I'm always knocking into it. The e609 has been really handy - I can just pull it off the cab and then drape it over another amp/cab and its ready to go. The cab grabber idea would be cool I think because you can hopefully just leave it set up where you like it and then pop in the SM57 when your ready, plus its off the ground and away from cables and pedals (and me kicking it...). I see a couple models of grabbers, they both seem to look pretty good.