This is decidedly inelegant, but 8x10" bubble-wrap bags are actually the perfect size for these mics. I just slip 'em in, roll 'em up, and fasten with a couple of velcro ties. After a few months when the bubbles start wearing out, I throw 'em out (the bags, not the 480s) and grab two new ones. They're about four bucks for half a dozen at Staples.
The wrapped mics fit snugly in a compartment in my bag so they don't get jostled.
I'll have to ask my wife to make me one of those pouches though, they're way cooler! +t all around