It seemed to me that Wayne had been a voice of reason at some times!?!

Actually at one point in my teen years, I had run out of 1/4" plugs for speakers and thought to 'carefully' use a standard wall plug instead. You can guess what eventually happened one day. Let's say the only one more startled than I was was the 8" woofer!

I think that even if you use an inexpensive and sacrificial type of protection (read: cheap) for some of the more robust loads on a different circuit, it would be better than straight out of the wall.

I hope it works out!