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.
Prostate cancer diagnosed: May 15, 2006 (age 40)
Gleason score: 3+3=6
daVinci radical prostatectomy: July 25, 2006
size of tumor: approx 1.1 inches
post-surgery Gleason score: 3+4=7
negative margins from surgery
number of pads/day at 3 months after surgery: 3 to 5
number of pads/day at 4 months after surgery: 1 to 2
first post-surgery PSA: 0
ongoing post-surgery treatment: Cialis every other day, Viagra "on-demand", ErecAid pump daily