GR is great and I would take it over any APS-C or mirrorless alternative. I take mine on every trip. I once sold mine and tried a Fuji XE-2 with a 28 and regretted it. Fought with the metering the whole trip and sold it immediately on return and bought another GR.
However, I still find that I don't get as much satisfaction from shooting with it or from the photos I take with it as my M9. So if possible I bring them both.