I bought the irons and due to a lack of time right now I can't go into too much detail. They're a huge improvement over the G20s. Precision is very good - not R11/Bladez excellent, but as close as anything else. They're super dingable.
Up through 5 iron stops with no to minimal roll on a flat green FBS in a light crosswind with Cally spin balls. The 3 and 4 irons definitely can roll away from you. 8 iron goes longer than stated, I haven't figured out if it's inconsistent or just long.
I had a couple of shots where I was disappointed with the forgiveness, and many more where it certainly helped. This plus dingability will help anybody who misses as few as 3 greens per 9 with R11s.
The biggest drawback is the lack of distance on the long irons. Users will have to learn how to choke a 3 wood to below 90%. That's a tough shot...seems like every pixel is 2-3 full yards. On the other end, the 94 yard PW punch is very useful.
The wind offset and carry distance adjustments for spin are very close to R11s. They're definitely high trajectory clubs. I Haven't tried any of the 25 ft.+ elevated greens yet.
I'm sure many players can score high 50s with these clubs and Callies from the tips, including some who can't with the fast-meter clubs. Also, players who reach high 50s once in a blue moon with R11s should be able to do it much more often.