AZaviatior-
Yes we do take 135 junpseaters. This is right out of our GOM.
"Certified flight crewmembers and dispatchers of any Part 135 certificated air carrier presenting the appropriate documentation. A corporate photogragh ID and appropriate license/medical qualify as appropriate documentation. Priority will be first come, first served."
Obviously, you'll be on the bottom of the priority list. And there has to be a seat available in the back. Of course, captain's discretion. Good Luck.
sayagain?