pics2

In "EVF Only" the image will playback on the LCD when you press the "play" button, however menu settings appear only in the EVF display.
 
I too would like to have it so when in the "EVF only mode" when I  hit "Menu" or "Q" the display would switch to the LCD and not the EVF, so as not to have to toggle thru the viewfinder settings.
 
I see no reason why I want to keep my eye to the viewfinder when I need to alter the settings.

You can lock it on XE2 by pressing Menu button longer. But, it locks the four wheel button, too.

Sure thing--glad it was helpful!
 
Yeah--the X100S definitely had that same look... If not identical, the sensors are very similar.