In reply to vscott:
> Other option is dartwin - think the front section can be bought as a replacement when worn.
Yes, though no antibot (except DIY).
I would however bring another contender to the discussion.... AustriaAlpine Skysteep. Have used it on ice (and continental & scottish type) mixed for 2 seasons now, and they rock. Better than G14, Dart, Cyborg, Stinger and Lynx. With fit quite small boots and also bigger ones, and cheap.