I have 3 pairs of Keens. And 3 pairs of Chacos. (I like Chacos the most)

Yes, the H2 can be hot. I think it's the straps, rather than the toe cap. All my fisherman sandals feel the same, heat-wise. Check out the Keen Zerraport for another strap option.

I ride in Keens and in Chacos with my flat pedal utility bike.