People say shutdown is shutdown no matter what... but I disagree totally... Right after you come off tren, you have no desire, sex drive.. nothing.. you feel empty. Its hard to explain but if feels like all the symptoms of being shutdown to a massive degree.
Coming off test E however, you still feel good. Have a good degree of sex drive going and overall don't feel much different.
All in all, progestins just leave you with basically the same amount of test in your system that a 6 year old girl would have.
Everyone is different though, for some tren improves sex drive and gives the total opposite effect that I listed above.