Eh, call me the old curmudgeon here, then, but I've always thought micing an amp live isn't that hard, and you don't need THAT much stage volume to get a great sound out of any of my Mesas. I'd rather just point a SM57 just off the cap.
You're not a curmudgeon, you're just a guy who needs to gig more
...And no, it's not hard to mic a cab. That's not the issue