Long-time lurker. Thanks to all the knowledgeable people on this forum who have taken the time to help the community.
I'm an adult beginner who has been skating for a little over three years. I have a narrow, short foot, normal arch, but a freakishly high instep. I've always had trouble in regular shoes too.
My LHS sized me into a 6.5 D Supremes the first time, and it was brutal. The length was right, the heel was right, but literally half my foot was sticking up above the eyelets. I crammed my feet into them and skating was excruciating .
Finally I admitted to myself this wasn't normal new-skater foot pain, and tried again. I went with a Nexus in 6.5 D. Even that was a little shallow (still failing the pencil test pretty easily) for me but I could make it work with loose, bar lacing. It was too wide and I had almost no heel lock, though. Unhappy with my progress learning to skate, I started working with a skating coach recently and they strongly recommend I get new skates, said these aren't responding to my foot movements properly because of the extra space.
I read a ton of the archives here, some of which I'd read the first time I was struggling with skate sizing. I got the impression that my specific foot type would be very hard to fit in retail. I went in to my LHS ready to give retail one more try but going into customs if I didn't find anything. As usual, half my foot sticks out of the medium-depth lines and my feet were swimming in the high-depth ones. So I got my foot scanned, ordered from True and am really hopeful this can help. Not expecting miracles overnight, but I'm hopeful I'll be able to feel a difference.