Just a suggestion try looking up on youtube "1 year on T" and "2 years on T" and so on. You can see their progress to get a vague idea. I know that out of the stuff I have watched I want to say about 1/4 of the guys who have been on T for about 2 years have stopped it for some amount of time for various reasons. Not stopped it for a year or for good but for a few weeks to a month. I really don't have the answer you're looking for because everything I would have said has already been mentioned (fat distribution, facial changes, etc.)

Thanks Andrew.