Wow, amazing, I hardly imagine I would bring both GR and a GRD together!"GRD4, being smaller sensor, has the advantage of closer macro n larger dof, which would be popular for ppl looking at this kinda form factor camera...
Most importantly, GR is not an upgrade of the GRD4. It's a completely different camera"
Because of these reasons, I am carrying both GR and GRD IV with me everyday. Hey, it still beats carrying a m4/3 body+lens![]()