I've heard numerous times that transitioning makes you more susceptible to the cold, and while I do feel colder when I'm cold, it still takes alot for me to actually get cold.
I think my natural body temperature is still pretty high and I can still last for a good long while without any coat or jacket.
Honestly haven't been able to tell much of a difference, though part of that is due to a change in work environment to one that has AC. I changed too many variables at once to give an objective reading, but I think it's a little better?