#Me2
Mine has served me for decades, has well north of 20K rounds through it and has been almost trouble free (I did have to replace the little metal inset and spring that goes in the firing pin channel but the gun continued to function during that time). I purchased it early in my pistol journey to be able to supplement my full caliber pistol shooting and to shoot at my colleges ROTC indoor range that only allowed .22 to be shot.
That was almost 30 years ago. While it has many of the functional similarities to a 1911 or other modern service handgun I feel it comes up short against modern trainers like the Beretta 92 conversion kit or the G44. I’m not a 1911 shooter so don’t know what is available for a .22LR trainer or conversion kit, but that would be the direction I would initially go. Beyond what others have already mentioned I would add that the 22/45 will not work with your 1911 holsters and gear (May or may not be an issue depending on your gear), the magazines are tactilely different from 1911 mags, and the gun just feels different (doesn’t have a slide, etc). I would say it’s an 80% analog…