I've always used thumb grips with the X100F (T,S,0) since it improves the grip tremendously. When I use the hotshoe however, the grip must be removed and once again I return to a hard to grip camera. When I was in Japan, I bought a sheet of camera leather tape in a hobby store. I didn't think much of it then but it became useful very quickly as I started using it on many parts of the camera.
One thing I miss very much from Leicas and other rangefinders lenses is the presence of the focusing tab. With a focusing tab, you can learn the focusing distance / position of a lens and get a feel for the distance and also making precise fine-tune possible with the slight move of a finger. There has been a few excellent commercial products made available, one of them being TAAB, and other various 3D printed solutions available, though in my opinion they all take away from the compactness of the X100 cameras. With the extra Sugru I had left over from dustproofing the viewfinder, I opted to make a focusing tab on the ring of the X100F.
Do you want your viewfinder looking like the picture above? This is what happens to my viewfinder on the X100T after nearly 2 years of normal usage. I don't think any of us wants to, except over time this WILL happen as somehow dust always finds is way into the X100 viewfinder. The X100F is not sealed, and there is no way to open the camera up yourself to clean out the viewfinder. Having owned all previous X100 versions, I have experienced this phenomenon happening to every single X100 I've had. Thankfully, there is an easy way to slow down the accumulation of dust over time (besides not using it).
Since getting the X100F, I've been looking to refine how I use the camera and carry it's accessories. In a few days, hopefully I'll have up on the blog my impression of the X100F compared to the previous generations of X100.
Even though the X100F is built to be a single lens camera, the converter lenses helps a lot in bringing more versatility out of the already excellent lens. When traveling light, I carry only the X100 and both of the converter lenses (TCL-X100II & WCL-X100II). My camera bag all have been deeper than it is wider, and I felt like it's really a waste of space not to utilize the vertical space. So a while back I've started with experimenting with double sided caps for securing the lenses. The lens stack feels hefty, like a single lens, and can take up one precious space instead of two inside the camera bag.