I also owned a G2 with 28, 45 and 90 mm. It is the smallest autofocus camera with interchangeble lenses I have ever seen, it is even smaller than a Nikon FM2.
I didn't have any problem the time I got it but the focus with the 90 mm that is not very precise. Image quality is beyond any doubts. 45 mm is fantastic, a true gem that shine specially with color, 28 mm is an excellent wide angle. I didn't find myself with the 90 mm.
I use very little 35 mm, and when I do it I prefer to use either my Nikon FM2 or my Canon 1V. So I sell it at the end due to lack of use.