I have a 9mm. Decent gun, take down lever was a nightmare at first. Very accurate gun, trigger press is super long (double action). Lots of stovepipes, too, when I first began shooting it, but that too has sorted itself out after it was used a bit. Once you get over the unique characteristics, it's decent. I hated it at first but wouldn't go back to my 226 now. Not sure how a .45 would differ.
I've seen a few sponsoring stores with .45 mags on their website. Definitely easier to find than 9mm.