GX100 versus GXR accessory questions.
VF2 is way better than the VF1, bigger screen and better resolution. Unfortunate not interchangeable.
The GX100 case won't fit the GXR.
If you have the DW-6 keep is. It will work with the S10 but I also use it on the A12 28mm (with a 40.5 to 43 mm step-up ring).