I've been shooting cloth-shutter nikons for a couple of decades. What I do is: a) be mindful of where the lens is pointed in bright-light situations and b) keep the f/stops all the way closed when carrying around the camera. Like keeping the lens focused all the way to infinity, out of habit I know when I'm getting ready for a shot that I'm going to need to adjust the f/stops ... because they are all the way closed, you know you're always going to turn in one direction and with practice can just count clicks.
I always thought of shutter burn holes as something more common with cameras left in the shop display windows. However, a genuine concern with 50-year-old cameras is light fogging around old seals, so for me it's good to build habits that prevent intense light from spilling into the front of the camera.
