My only reservation would be with the aluminum frame. And, it may be an unfounded reservation, especially if you are not going to run a huge amount of rounds through it. Shock buffs may help, but I am concerned about compromising reliability in the scenario you describe, which is the very reason for my interest in the .45 Super.
I've had two Kimbers, one a 5" aluminum-frame, and one a Custom II. Both have been 100% reliable, and the Custom II has since been converted to .460 Rowland, again, operating without issue.
