yes i have processed this film as slides many times and it works fine. the base is darker than many other films but it projects good. the grain is large, but in MF it should not matter. i prefer the 100 speed film, in the Xtreme line, as the base is slightly less grey. when doing slides from B&W film I find that the best results always, for me, come from traditional grained films, not the new tabular films like tmax or acros or delta. so I stick to fp4 and the likes. the rollei retro 400s and 80s make the best slides as the base is truly clear and amazing projected.
check these 2 threads for more info
(there was a url link here which no longer exists)
(there was a url link here which no longer exists)
john