Well, I've read a few articles on Diafine and Tri-X which convinced me. Low stress, and allows ISO changes mid roll, which is usefull with 70mm 120 shot backs. It also lasts forever, so I don't have to throw away 15 litres each month. Don't need temperature control, or time control. It will also tame the high contrast aerial film I have (it does with other films, so Im hoping it will work equally well)
Even better, if it doesn't go flat in tanks with lids, I can put 3 deep tanks in and use racks instead of spirals. Hoorah!
If no one knows, I might just have to try for myself and post the results.