Bergie. This won't answer your question directly, but it may help with your decision. I have the CZ75 in 9mm with the Kadet upper conversion in 22 cal. I believe this would be somewhat like the EAA unit. They are no target pistol, but shoot about as accurately as their centerfire units. I site my 22 unit in to impact at the same point of aim as my 9mm barrel. That way, I get lots of practice with the same trigger and site picture as my centerfire caliber. The unit cost me $205.00 but I figure that I will save that much in practice ammo this year alone. I do have an EAA Witness 45, and in my experience, their quailty is great. I would guess that the conversion units are just as well made.
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Good shootin to ya
Plateshooter