I ordered half a size up my normal US size. Normally I wear a US 8 and ordered an 8.5 which was an EU/FR 40 on the Loewe website.Has anyone ordered these from the On site? The On site shows normal US sizing, including all half sizes. The Loewe site and other retailers only show EU whole sizes. I'm confused if I can just order my US sizing direct from On and if they will fit?