The cool alpine air whipped across the blue limestone face of Waskahigan Watchi, also known as Mount Rundle, in Canmore, Alberta. Sarah Hueniken and Will Gadd were several hundred feet up a route called The Alt Left, a relatively new 5.12 multipitch that’s been dubbed the best “locals’ big wall.” As a married climbing-guide couple, Will and Sarah were having a moment of professional disagreement.