Paul - I have Sealskinz - following another RIBnet users suggestion
Used them in the fated Cowes trip - very wet, very windy and hanging on in sheer panic and they were great - movement was still easy, my fingers stayed dry and warm and it was'nt until I took them off I realsied how cold it was
However.... once you do take them off - if they are wet they are hard to put back on especially if in the meantime your hands have also got wet.
But very pleased with them - Marshalls were the cheapest I could find but there might be other stockists out there for less
PS They are not neoprene