I'm really enjoying my X100F. And I find that the thumbsup helps prevent me from constantly hitting the Q menu button and the exposure compensation like I was before, just carrying the camera (not when actually shooting). I probably would not bother with a thumb grip if not for that, as the camera is so light that I don't find grip to be a problem. I still turn the camera on inadvertently from time to time as I have with all previous iterations of the X100. Seems like they should have firmed up the on/off switch and exposure comp dial long ago!
My question: Is there a way to tell in EFIX if a photo was taken in crop mode? As with the other dials, I keep finding myself hitting the digital zoom by moving the focus ring inadvertently.