regardless of RF or DSLR, there is grease mark on LCD. I hate the smell days later if I forgot to wipe it. For the same reason I don't like people touch my cameras...
I use right eye to focus which should be better than lefty. I've tried to rotate my head clockwise to avoid touchy touchy but weird becoz I use both eyes.
I have a diopter + prescription on the M already but my nose is still touching the LCD. I'm thinking to add a larger eyecup that can push my face away a little which I haven't tired yet but would it work?
P.S. It's not an extreme case, my nose is normal to medium size. =P