Hung trevor etc. don't sweat the trans thing. Many guys are turned on by shemales, not because they are still part male, but because most of them have "overwhemingly" female characteristics, voice, breast, ass, face etc. Plus most shemales prefer "straight" men because they themselves consider themselves "female". It's one of the reasons lots of transgender people get assaulted "if" they don't alert the person to what they are. (Scenario) A guys sees a good looking woman in a bar, they've been talking and dancing all night. She invites him to her place and he hasn't been laid in months. He then undresses her and out "pops" the penis. The poor guy is standing there mentally confused with a woody hard enough to break glass. At this point he doesn't know whether to punch the chick out or bang her. His body is saying yes because of his automatic senses and turn-on's to the female gender, the smell, feel, looks, touch, etc. But his brain is "alarmed" by the sight of the penis which in his head spells "M- a- l- e"! Lot's of times the man get's "angry" punches her out and says, "I'm not "gay" and leaves. Not because he wants to be violent, but because of the embarassment of his "masculinity" being "fooled".
Conclusion, if you're into shemales, most guys that are; are probably straighter than an arrow. So just have fun viewing the "ladies" and unless you like rubbing on a guys muscles or stoking his goatee, I wouldn't be very worried.
Have a good day gentlemen