I have a GX800, I like it. With the kit lens, it is proper pocket sized, easy to carry anywhere. Tilt screen is nice, eg for low down photos of flowers, or for selfies. Though no viewfinder, which can sometimes be annoying.
And also not much of grip, due to the small size. It can feel a bit unbalanced if you’re using it with a big telephoto lens.
Its nice with the 25mm prime lens, which is still pretty small, can give you a bit of bokeh for portraits etc.
Also worth a look at the GX80, which is a bit bigger, but gives you a viewfinder, and better grip etc. Its a similar price with the cashback offer.