For a long time I only had a 50. When I traded my M4-2 for a chrome M6 I soon added my first 35mm lens a chrome Summicron and left that on through most of our early years with children. I don’t find the X100 limiting. The compactness of the fully collapsible Elmar and the wonder of the SBOOI finder mean my Barnacks nearly always have a 50 screwed on. I go out with one lens only 90% of the time. You see more clearly and efficiently with the limited choice.