From having some standard shoe versions of the some mtb Northwaves and having had or tried on shoes/boots from both of you (Jonny and Dave)...
Dave, they'll be too tight matey. My NWs were a size 10 UK and in about 4 years they never stretched at all (or so it seemed) and although fit perfectly they were always snug enough to keep the foot proper held. Sounds like gibberish!: not sure... but I can confirm that my uk size 10 Shimanos are almost identical in sizing except for the fact that they are a bit more forgiving on the foot. The boots I got off you fit me well (and although they were walking boots) I think I can assure you that some 10 NWs are gonna really put alot of pressuere on the back of your heel.
Johnny... from having tried them Shimanos off of you, I'm pleased to report that these will fit you like a glove (or Cindy... or whatever the going term is these days) and most importantly give you the extra wiggle room for some decent winter socks.
Disclaimer: dont shoot me if I'm totally off the mark but I'm 99.9 percent certain that my reasonanijg is bang on
