Seems like not too long ago there was a large variety of the Rock Island 45's being offered. Different features and finishes. Now when I check the online sites I see just a very few models. I know everyone was pretty excited about 'em a while back. How have they held up for you. If anyone here has one with the matte nickel finish, is it holding up. Is the parkerizing staying put. I tried to get some info at the Armscor site but couldn't really find more than a couple of pictures with almost no info on the differences between the models. How interchangeable are they with the actual 1911's? Anyone know of a site that will actually give me some info on them?