I agree that in a way that what you had you probably still have, i.e. emotional or not emotional before will probably mean that one will be similar after really getting into and accepting one's transgender state of being. However, since finally being able to realize what we are really doing and what we are or may be can be an eye opening experience which needs some courage, a better understanding about oneself, maybe some more practical and common sense thinking and analyzing, and a newborn sense of freedom for oneself, I believe that we can open the door for other feelings, mannerisms and viewpoints that we may never had thought that we ever had. That does not mean we went from macho to femme, but rather we opened the door to let what might have always been within us to finally take a few or many steps out the newly opened door.
So, taking that to what Pamela has described, one may start to let their emotions show more publicly when in the past they had been subconsciously been held in check. I also think that we may start looking at other things differently too. We may have never really paid much attention to our presentation, how we dressed and coordinated our birth gender wardrobe and now we care about one or both. We never had thoughts about sexual experimentation with the same sex, including those camouflaged like we sometimes are. Freedom of the mind and then ourselves in front of others can be a truly powerful medicine that let's us be more open and maybe even exploratory about things we never considered before.
I am not saying this is for all or most or only a minority because I have no way of quantifying this. But, I truly believe that people can change and let out feelings, thoughts and curiosities that have always been inside of us but have never manifested themselves until we were finally true to ourselves. As a dear friend of mine here in the TS section always stresses, self truth can be truly liberating in many ways.