I would agree, they are very easy to carry with you more of the time to grab more shots.
I also love the Leica connection for both the quality of the lenses and the design aesthetic of the bodies, it was an inspired move for both Leica and Panasonic to partner. It gave Leica access to the manufacturing base of Panasonic, and Panasonic access to the technology and know how of Leica.
My GX9 is very reminiscent of a classic rangefinder camera style body and still has a viewfinder which I prefer having grown up using Nikon film cameras, with one of the first EMs in the UK, followed by an FE which I still have.