I'm currently using Revita, added it almost about a month ago now.
Currently having (hopefully just ending... knock on wood) a bastid shed right now. Could be the infamous 6ish month shed on finasteride, could be a second minoxidil shed, could be from adding revita... who knows.
Even if it is the revita, shedding should theoretically be a good sign if one can see it through.
I like revita as a shampoo though, it just feels like a good quality shampoo and it doesn't overdry my hair like it seems to for some others - actually leaves my hair pretty good. Like you I have a lot of hope for some of the ingrediants in there, Dr Lee's is somewhat lacking in that regard.... not to say it's not a good shampoo of course.
Basically, nice shampoo.. might be partly responsible for my baastard of a shed, is that a good thing? maybe? Bad thing? probably.. lol.