One comment that I’ve read on several forums where the X1 is discussed is that the Tv and Av dials are too loose. The problem with this is that they may be inadvertently bumped while shooting or taking the X1 out of a bag. As explained in the video, the dials do feel looser than I’d like. For me I’ve only had issues when pulling the camera from the Leica Leather Case. It is a very tight fitting case that sometimes causes a dial to spin.
Most important to me is the affect it may/may not have during shooting. Fortunately, I haven’t experienced any problems with dials being changed while I’m out shooting and that’s after 400+ photos in the last two weeks.