I tried sealskin last winter, got them a good £10 cheaper than the shops from an equestrian store on e bay
They were great with the added bonus of keeping your hands dry even if you emmersed them in water.
But they did'nt last too long before they begun splitting around the thumb joints.
Think I'll go for the woolens under rubber buiders gloves this winter as its cheaper and durable. If I had the money to splash out I reckon a thermal and waterproof motorcycle glove would be the best, if they can keep your hands warm and dry at 70 mph in the rain and cold, they'd do for wfp! (or trad, sorry)
Simon