Anecdotally, they definitely don’t breath as well as shoes without, which is to be expected give n the properties of gore-tex. Since Gore-Tex needs to be kept clean and washed regularity, my theory is the shoes will perform well in a lab/testing but in the real world will get dirty and “plugged” up pretty quick. Shoes are gonna see a ton of dirt compared to a jacket. I avoid Gore-Tex foot wear unless it’s for a winter mountaineering and waterproofness is essential.