FWIW, my doctor gave me a pamphlet about
ErecAid on the day my catheter was removed (after daVinci surgery). He didn't push it at all. Once I found out my insurance would not cover it up front (I had to pay the $575 up front, and wait to see what the reimbursement would be, which was around $330), I hesitated to purchase it. After several weeks of no erections, however, I got it.
The doctor also did not prescribe Cialis/Viagra for me until my 3 month post-surgery PSA, when I seemed more concerned about the lack of erections. My insurance covers Viagra, but not Cialis.