Just noticed that Sportscraft of all people now carry Red Wing boots but the sizing is in UK http://www.sportscraft.com.au/Red-Wing-6%22-Boot/9344961317250,default,pd.html
But they only carry them to a size 7 WTF?
GF, that's interesting.
As you say, though, the sizing is very odd and I suspect it might be wrong, as they list sizes as running from 36 to 41. If that's European sizing, then a 36 is basically a children's shoe - it would be equivalent to a UK 3.5 or 4.