I don't think the .45 is a high enough pressure cartridge to really benefit from being ported, but I could be wrong. If you plan to carry it, I would suggest not getting a ported gun for several reasons, one being if you had to fire from a close in position (retention as it's sometimes called) you could get a face full of gas. This can be mitigated by angling the pistol, not hard to train to do, but you better do it. Secondly, any added flash at the muzzle seems like a bad idea in a gun you might fire in the dark, in a self defense roll.
As a plinker, not a thing wrong with it as far as I know, not sure what the benefit is though, maybe some more enlightened folks will chime in.