@H. E. Pennypacker Thanks, this is helpful. I'm thinking of diving into the GMTO with 1 (museum blue) or even 2 (+green waxed suede) orders, but I'm also a bit leery of sizing. I have a pair of Meccariello Chisel 2 chukkas, UK 9 which are a hair roomy and another AM Aeris U-cap derby, UK 9, that fits well. (Some UK 9 Cheaney Shackletons are a tad roomy.)Oh **** my bad. .5 size down.
Your experience would seem to suggest sizing down to UK 8.5. Sound about right? Any others with similar experiences?