I don't need it. I rarely play my kb at home anyway. I've never had an arranger totally fail on the job, although the SD7 crashed and had to be rebooted fairly often, once or twice every night.
The SD7 suited my needs just find, but I totally lost faith in the company as far as support and in selling a product that is ready to use, not in a beta state. I wish them the best though.
I'm only playing twice a week, and if my PA4X ever fails, I can borrow DickieT's; he rarely uses it.
I leave my p.a., stand and lights set up all the time. I bring the PA4X home on Saturday night and take it back on Friday. The valet at the club has been loading it in my Expedition for years. I don't have to do it myself. It's no problem to bring it into the house when I get home.