When I applied to the job I'm at, I really worried whether they would take me as male or female since I changed my name on my resume. After I got hired in, I found out they hire a lot of LGBT people. With my coworkers, it's been very relaxed since then, and I've educated quit a few of them about gender and identity. Coworkers and clients refer to me as both he/she, but it never interferes with the job that we are doing.
I've had male and female coworkers engage me in conversations about gender, and by being honest with them, they usually learn a lot about how I perceive things, if that makes any sense? I think we need to start being less defensive about what we're going through. If trans people are working in an environment where it is safe to talk about gender and identity, we should educate the people around us instead of hiding and trying to pass as cis.