Which winter shoes / boots are people using?

I was looking at these at the Cycle Show:
http://www.lakecycling.com/mountain-winter-c-1_4_11.html

Way over the top, but totally look like they'd last 3 or 4 winters which makes them not as bad cost-wise.

Apparently Half Pipe near Notting Hill does them or can order them in. http://www.half-pipe.co.uk/

They're available in wide fit for the bigger sizes too (not necessary for me, but seemed good that they cater for different sizes).

A friend who rides year round in Minnesota rates these highly and they get proper hardcore winters over there, so they must be good.