I was considering one but ended up with a Delta Elite. The 10MM round is just as powerfull and a Colt 1911 is going to be a lot easier to fix if anything goes wrong. I wouldn't mind picking up a Coonan at some point in time down the road but for the price they charge there are a lot of other really nice guns out there.
If a .357 Magnum auto-loader is what you need than the Coonan looks like the best option in my opinion.