I had mine out in January of '04. Mine was a retropubic, not endoscopic. My scar runs from belly-button to pubic bone!
I think the 6-week number is reasonable. I wasn't riding much then, but I see where I ran a 50-minute 10k on March 27, and during the following year I qualified for and ran the '05 Boston Marathon in 4:07. Later that spring I ran a 45:02 10k
PR.
Going at it too hard too soon can rip things loose. Remember, they're cutting the urethra and stitching it back onto the bladder. You don't want that to pull loose!
Best of luck to you. BTW, I've had an undectable PSA since then. (yay!)