Fellow Agreeables, one of our popular tyres is on offer at Chainreaction:
http://www.chainreactioncycles.com/cont ... -prod18796
And for those who insist on doing the CR when it's icy:
http://www.chainreactioncycles.com/schw ... -prod48758
I have the mtb version and they are great on ice, black or otherwise, hardpack snow, wet roots and mud