Any reason why you want PBT?
If it is to stop them going shiny, most A sets are shiny to begin with - that is part of their charm.
Penumbra are semi-matte, but they shine up really quickly. I agree, it's part of the appeal of the profile to me somehow. It really fits the feeling of the caps. I don't think I'd want SA in PBT myself, either. I'd like to try some in POM, though
There are gloss, semi-matte and even matte SA sets out there. IIRC, the Commando set is matte.