I acquired an Aliexpress OZ.1i HS from CallMeAl recently and have been playing around with it. So far informally testing it in my office I am better with my current putter(s) which are all slant necks. I do need to level the playing field though as the OZ is 1" longer than I was fitted to and I don't really care for the grip on it.
I do actually prefer the feel/sound of the OZ and the sightline is a bit better than many other ZT putters I've tried. Overall I like it, but I have a feeling the toe hanging slant necks will probably win out in the end as I prefer their sightlines and my stroke is a strong arc type.