All...with just enough great wine in me from dinner, I'll attempt to answer from my own perspective sans alcohol.
With ED controlling my life for 15+ years, the only thing I could do was (as a MBiM) to behave as a bottom. And, with the introduction to the gay lifestyle in SF in the mid '60's, I reverted to my bi side rather quickly since living without sex of some kind was as foreign to me as to be deprived of oxygen for more than a few minutes.
I totally enjoyed being a bottom (so much so that my handle on many sites is 'nkbtm23140'). It offered a foray into both gay and bi lifestyles that I could relate to and give of myself what I could with the limitations that ED fenced off for me. Trying to be a top was totally out of the question for me as a husband and m2m player. Yes, I could obtain a great erection while stimulated but the moment I attempted penetration, either vaginally or anally, I was done. No pills helped and I wasn't about to use rubber bands to cut off circulation to my penis nor use expensive VEDs or (EEK) needles in my penis.
My only option was the irreversible procedure known as IPP.
I informed my wife that on November 8th, 2018, I was going to have implant surgery. She was, understandably skeptical at first, asking "Why didn't you do this 15 years ago?" Followed up by the phrase that "Just know that we won't be having sex like we were just married!!" Thanks, hon, for your support...
She came around, however, as time grew closer and eventually went all in with me. Post-op has been difficult but just to say that I now 'work' where I hadn't been able to work before. Back to the question at hand: pre-op bottom switch to post-op 'top' or at least 'versatile'.
For me, the transition has been interesting. Sex with my wife has been great as she has assumed some roles that she could not have done before. Positions that I could not maintain (cowgirl), she has excelled at and has brought me to orgasm when I couldn't have held my erection before! OK...one success! My role as a bi top/ versatile has been more difficult. With a m2m playdate, I've had to totally revise my bi thinking to be more 'in charge' than a 'just take me and fuck me' one. I still play a bottom with several guys but I've had requests from some of them that they want me to top them. Hmmmmmmm...role reversal that has me focusing differently on our relationships. Not for the worse, by any means. I've enjoyed gently leading these tops into the world of a bottom and, to date, have had no complaints.
So...do not NOT have an implant if this situation is an issue for you. I endorse your change of direction, whether permanent or temporary. I STILL enjoy bottoming from the pure joy of giving pleasure with my body to my lover! Nothing beats that.
Anyway, I'm too long with words. If you have other questions or comments, please PM me. I'm willing to discuss more "in depth" responses.
Edd
