I have one on my tri bike and now one for the road bike too
On a training camp last year, of 5 of us in the fast group 4 were on adamos
On a tri bike you essentially sit off the front of it- so your tackle has lots of room! i was sitting too far back on it and hot moved forward on it so the back of your arse cheeks meet with the saddle about 2-3 inches from the rear.
Again getting it to the right angle takes time
I use the road - its softer tjan some of the others, but its still hard. its also a little wide at the front (apparently) but ive never noticed it really