I didn't know CA even made one in .45 Colt until I stumbled across this thread.
I found a review of the gun from almost a year ago
here, but I can't seem to find the gun in CA's online catalog.
If you're only going to load for 800fps, though, I don't see much advantage over their Pitbull in .45acp shooting a 230-grain bullet at around 850fps. Maybe the advantage might be in a heavier bullet?
When you get the gun, I'll sure be interested to hear what you think of it. Do you anticipate delivery soon?