I have a full size Custom and the Eclipse Ultra. The ultra has more "flip" than the Custom. That being said, its not "bad" recoil, just "different." I have had no functioning problems with the Ultra - except for with the Factory mag. DON'T USE KIMBER MAGS EXCEPT AT THE RANGE. Get you some Wilsons ASAP for carry.
For comparison, my Ti Smith with .38+p's has a recoil much less managable than the Ultra.