I think that more than one knife is excessive, especially when on foot, a situation where weight and bulk are significant.

Appropriate gear is heavily dependent upon the environment and conditions you will confront. In the Sonoran desert in June, you want water (at least a gallon) and a broad brim hat; a knife may come in handy.

On top of longs Peak, any season, you want warm clothing, probably some technical climbing gear and sufficient water or the means to melt snow. Bivouac gear may well be useful, along with a decent blade.

I have several knives, mostly less expensive varieties; none of them have failed me in a pinch. I find a multitool or SAK with their various tools have been about as useful in different circumstances as the included blade. My current EDC is a Skeletool.