It's been my experience that I don't get the maple syrup smell with Fenugreek Saponins like I do the drug store versions of cheap Fenugreek. I get mine off ebay from India, (where 90% of FG originates), and FG Saponins is a better version than plain FG.
Managing erections with phyto/estrogens is a fine line to walk. If you do try PM, keep it at a lower dose. The one thing to battle shrinkage is as they say, use it or lose it. One thing that PM/E2 will do is stop your nightly erections and so-called morning wood. So, regular self-stimulation will go a long way to helping you keep your erections.
I've been on NBE/HRT for seven years and while I can still get an erection, they aren't as instantaneous as they used to be.
While Saw Palmetto 'will work', Red Reishi Mushroom is a better Anti-Androgen. White Peony is also good for its Aromatase properties.
Be sure to check the Breast Growing Notes, Anti-Androgens & Project-X threads for all the best science research related to NBE/HRT.