Yesterday I went on a 60 mile ride with the Adamo.
Comfort
On a scale of 1-10 the comfort ranged from 6.5 to 10, with an average of 7.5. It wasn't that it got less comfortable as the ride proceeded, it would just change as I'd try different positions. I increased the nose-down tilt, and that was an improvement. The problem is that I am now at the maximum tilt allowed by my seatpost. Here is is after the ride:
Note that the rails are almost parallel to the ground, which is the starting point recommended by the manufacturer. Perhaps I'll swap seatposts with my wife and see if her's allows more tilt. It really seems that a little more tilt is what I need. I have no impression of sliding forward or putting more weight on the handlebars.
It is hard to know exactly where I should be sitting -- there isn't a clearcut sweetspot. When I'm sitting further forward, I don't feel like I'm optimally positioned on the bike, yet I'm still behind the standard KOPS position. The saddle is as far back as it will go (there is a "MAX" marking on the rails). If you are looking at the photo, and thinking that it looks wildly cantilevered, remember that one sits further forward on an Adamo than on other saddles, since the front is "cut off."
I think that most of the discomfort just represents new-saddle-syndrome; that is, my butt needs to adjust.
Prostate
Based on last night and this morning, the prostate was OK, but not perfect. I'd say 80% of normal, non-ride status. It didn't fare quite as well as with the tilted-forward Alias saddle. Note that this is hard to judge.
Conclusion: Jury still out.