I just burned my last rolls of SFX200 with a 89B filter.
A crude digital picture of one of my proofs is here:
I was surprised at how well it worked with fall foliage.
Also the use of a rangefinder made composing so much easier. i set the light meter to EI12 for calculating exposure.
developed in DDX 1+6 (ran out of DDX and couldn't make a standard dilution) for about 15 minutes.