I've been in the GX game for three years and it's a lifer for me. Crystal clear WLF with stellar lenses and front standard movements? I'm all over it. Bellows focusing of course, with all the pros and cons.
I take mine into the field, too, and I don't do anything in a studio. It's a reliable tool and my most used camera, maybe tied with my Autocord. I rarely handhold it but that's fun on occasion. Optech makes a good compatible strap for just $30, which I keep on as it's nice to have the camera hanging from my shoulder when I'm moving around or setting up my tripod.
The lens lineup is neat. I do wish they went wider, but I think they would be pushing the limits and usefulness for what was meant to be a studio cam. My favorites are the 65 and 150, to the point that I'm neglecting my other lenses. 80, 115, 180/3.2, and the 210, none of which have disappointed me, though after one dramatic bit of flare on the 210 I've had to think about grabbing the compendium hood.