May I ask which film / process you use for BW?
I am only aware of the ADOX Scala (160 and 50 ISO, but only in 35mm...) http://www.adox.de/Photo/adox-scala/
Is there anything else?
Photo Studio 13 in Stuttgart will develop slide using the Scala process. They have a pdf, describing suitable film, on their website. In medium format I use delta100 and tmax400. The Rollei Retros are supposed to work well.
CHS100-II is supposed to be very good. Klaus Wehner has a very sophisticated process I read, and he really liked the CHS. Google his name and schwarz weiss dia and you should find him. I have two rolls of Agfa Scala and wonder if I should use them and have him dev it. He knows how to handle the aged film.
I have an unopened box of CHS100 in 4x5 and will probably use some as slide film and send it to PS13.