>>3541778The one you should have with you is the one you can bring with you.
You tend to not have a medium/large format camera with you on a climbing/cycling trip as these things are heavy and bulky.
That's where mirrorless and small DSLRs are good to have with you.
Wide angle zoom lenses with a somewhat wide aperture and image stabilisation tend to be rater usefull to have with you since they can capture just about anything in one image even when it's dark.
