I'm putting together a blank that will end up being a rollergun (maybe). I want to do an oil finish, because it is easy and cheap and I have to contend with areas around the roller. That said, I only know about oil finishes on teak and padauk (Riffe). I'm not sure about sapele's oil content or if that matters very much.
I can always go the epoxy route if the oiling isn't a good choice.