Yes, I break the 400 foot rolls into 100 foot rolls (using rewinds and split reels) then use a standard bulk loader, but no, I'm not selling any.
I rate it at 400 and develop it in ID-11 (D-76) 1:1 for 8 minutes. I've tried lots of different developers and times found on the web, and every single time when metering at the supposed speed of 250, the negatives came out too dense. So now I just rate it at 400 and like the results much better.
My early attempts were then scanned (bad word around here but hang on, this is important!) and I hated the results. Grainiest dreck I'd ever seen. But then I saw more than one person say "don't scan it, print it traditionally!" and when I finally got access to a darkroom I tried that and... they were right! It makes no sense, I have no idea what is going on, but it's true. I've made 20x24 prints from 5222 negs and sure you can see grain but not even remotely objectionable grain. It has an amazing tonal range, crisp whites, deep blacks, etc. Every fellow photographer I've shown the prints to has remarked how amazing they look compared to their attempts with Tri-X, HP-5, whatever, and I totally agree. This stuff is great. It is also the absolute FLATTEST film you will ever use. Makes it a lot easier to handle in the enlarger. Like, it's spooky how flat it is. You have to be a little careful to get it the right way around in the negative carrier because you can't just assume the emulsion is on the concave side of the film! Oh, and the lack of frame numbers is annoying - I mark the very edge of the rebate with a fine tip Sharpie marker to keep track of which frames I'm printing.
Duncan