I have the top end conversion kit. It's been reliable for me but it has some downsides. The finish sucks. It chips where the ejected case hits. I'm sure it will wear elsewhere as well. It also feels cheap (for ~$200 what else did I expect?).
I changed the sights to Dlask fiber optic front and adjustable rear. The front dropped in but I had to modify the rear to get it to fit. It looks like a Novak cut but it's narrower. I changed them because mine was hitting high at 7 yards even with the tallest front sight. I'm hoping this will resolve that (I will find out tomorrow).
Honestly, I think a dedicated .22 platform like a Ruger mk lll or a Browning Buckmark would be less of a hassle over the long run. I like that I can use my 1911 frame set up as I like it, but that's about the only upside to .22LR clones