If you have low T like obviously most people on propecia help have than of course raising it is the most logical thing to do. Most guys in their 20's (the average age of the propecia help group) do not want to go on TRT. So of course a SERM is a logical option to correct the low T.
As far as the concern of your T converting E at a higher than normal rate goes... Well that's always a concern no matter which method you are choosing to use to increase your T.
There is nothing about using a SERM to increase T that increases the likely hood that you will have a higher than normal estrogen conversion rate than on TRT. I think my endo that had me on it said it the best when he mentioned Clomid "acting as" an estrogen in the body in ways that are not understood. So your concern is real but thinking a SERM will make you develop a clit is crazy. The shrinking we see can happen when you crush your estrogen to Low as well. Guys on this forum have reported that from taking res 100 which is not even a prescription strength AI.
So it's a hormonal balance issue that causes this most of the time. proper T/estrogen ratios ect.... but there is something about Clomid that does this by some other mechanism of action. Even with that said I personally got more good then bad out of my experience with a Clomid restart
Honestly after my Clomid use, Four months on TRT I believe rotating T boosters, a healthy diet and high intensity training is the best way to go as far as increasing your T goes. Also we have carb backloading which I have not even got into yet.