If you really want 4x4 traction on ice or slippery vegetated surfaces. Carbides on top, regular logger caulks on bottom. Hoffman's Boots in Idaho does them.

[Linked Image]

I've used the CMI Instep Crampons on top of rubber boots for more edge grip.

[Linked Image]

Just about cracked my skull open using climbing crampons in the woods. Those spikes got hung up on some root tendrils and I went ass-over-teakettle pretty bad - never again.