I switched jobs (kind of, currently hold two jobs) and I'm one of the guys at work. It's a very liberating experience, definitely, seeing how I never managed to accomplish that pre-transition when I still lived as a girl, though I always desired it.
No one seems to know or suspect and I haven't been outed since only my boss knows about it (difficult not to, seeing how I also had my top surgery about two weeks ago).
Not being out to some of them does stress me out though, because I am also very aware of how I am limited in how I can participate in some activities that they take for granted I should be able to participate in as they do (e.g. going to the gym and change in the locker room). I've been thinking to maybe eventually tell some of the guys I speak more to, but we'll see. The people seem pretty chill thus far, but I'm unsure how they'll react and how it'll alter their perception of me. I am out to some of my friends online though I haven't met them and we are also in a way, "a bunch of guys" though the group is generally speaking, mixed and they treat me like a guy, too. It's nice to feel equal to them, anyway, and they don't seem to commonly self-reflect over my trans status whatsoever even though they actually know about it.
It'd be easier if I felt closer to these people at work, then maybe I'd dare to open up and tell them because I find it easier that way. I don't like the idea that I'm hiding and I need to come up with weird explanations or excuses for some things I do in order to not accidentally out myself. Maybe other people don't mind it, but i personally find it very stressful.