So I moved my Tokay to a larger tank last night. Surprisingly, considering I do little more than feed him and keep his tank clean, he did not put up much of a fuss. No hissing, no snapping, just a half-hearted attempt at running off before I scooped him up in a critter keeper and dropped him off in his new home.
So after transfering him over, I finally got a decent chance at photographing his vent area, while he settled in, so I figured I'd confirm my strong suspicion that "he" is indeed a he, here in the forum:
What does everyone else think?
Just for fun, and also since it pretty much is the only decent picture I've ever taken of him to date, here's a full body shot: