Thanks, that's an interesting topic. I'd say the only experience that I had which came close was at Check-In bar. One girl, whose name escapes me right now, but who I posted about on the check in thread at the time was a top only and an SM dominate. Long story short, we both used a rather attractive bottom girl very hard, but our personalities just clashed in the room. I would become annoyed anytime she tried to do anything aggressive with to me, and in return would try to put her back in her place as the girl, but that would make her bristle. Got to a point where she whipped my ass (sexually) with the flogger she had been using on the other girl, but I grabbed it away and swatted her butt with it. That made her grab a hanger and act like she was going to hit me (not sexually), got her calmed down and to finish without more trouble, and she was ok with sucking cock, but absolutely refused penetration even before the back and forth.
Gave the bottom girl 1k more than her (after all she took a very rough two hours) and that made the top storm out of the room. Bottom girl was very hot, but not small enough for my long term tastes.
I'm not that good at reading romantic signals so there may have been other ladyboy tops who were coming on to me but I just didn't understand it. Actually this was one of the big advantages to ladyboys over gg for me. Since I'm daft at reading between the lines ladyboys are more blunt about making the first move and, 'let's fuck' kind of advances.
Thinking back, one on soi 7 may have been doing what you are talking about, but I just talked shop to her, got her down to 500 short time over at my place, she came over and tried to top me while we were showering, but I just pushed her away with a 'no,' before putting her on her knees.
At the time I just thought about it like any meeting, since even bottoms/vers sometimes try to fuck or make me suck them. This is a downside to LBs for me and annoying. I tried sucking with a few in my first experiences, but didn't like it, and more recently, out of kink I like to keep them from cuming, or only let them cum on their own face. As for fucking, I used to say 'you're a girl, right? Girls don't fuck, they get fucked.' At first it was hot and kinky saying that to them, but over time it got annoying having to 'remind' so many. There are pure bottoms too of course, but quite a few are vers.
