First, Bergger does still offer a slow-speed blue-sensitive film in their catalog. This is actually produced by Filmotec, though, not by Bergger (which never produced anything at all). All their former films (BRF100/BRF200/BRF400) were absolutely Forte films with generously marked-up prices.
I gambled on a development time yesterday with DD-X - and it worked almost perfectly!
I developed it for 9 1/6 minutes and the negs look quite good. I might have fared better with 20 seconds less development time - but they negs seem very printable and scannable.
I arrived at 9 1/6 minutes by calculating the ratio of my development times for 400TX and BRF200 in PC-TEA and then multiplying my development time for 400TX in DD-X by that ratio. Taking good notes on your film development pays off.
I sure do wish somebody could produce more BRF200, though. It's a spectacular film when processed correctly. Thankfully, I still have a stash of Classic Pan 200 and Forte Pan 200 in 135 and 120.