So, I've very little experience with the Clarity in snow yet (maybe tomorrow!). But, with the Ford Fusion Energi we ran through last winter, it was definitely preferable for control on snow/ice to use the brakes and to minimize regeneration as much as possible. The brakes act on all 4 tires and regen acts on only the front tires. That makes a huge difference in control, both because of the number of tires is double and because it's good to have the rear tires doing their share (less chance of a spin-out). For me, I plan to run in ECON mode to minimize throttle tip-in and regen, and use my brakes all winter. It's a trade-off with EV range, of course, but one that is worth it for me.