The service grade Springfield M1 Garand that I got for I think $450 is a fine shooter that I can sell for at least twice what I paid for it. Doesn't look like this will be the case for the 1911s.
Were I to buy one, it would be as a safe queen investment. There's nothing wrong with wanting to do that. While I also have some Nosins that are shootable but not fun, and also didn't go up in value much, I also have some K31s that tripled in value. So from the investment side, there's nothing wrong with taking a chance on one of these 1911s. Though I don't know, given the projected CMP prices, that they will appreciate a whole lot.