I have learned a lot in the last year about the importance of properly fitting boots and also the basic guidelines for determining a properly fitting boot. I had started doing some research on boots before my first visit to a ski shop last season. It was a slopeside shop that employed recommended bootfitters and also sold a few boots (there were about a dozen boots on their wall). My boots seemed sloppy and I wanted to find out if they could do anything to help the situation or if I would just need to buy some new boots.
The bootfitter on duty was already helping another customer when I came in, so I just sat down to wait for my turn. I was very impressed by how the guy was dealing with this particular fitting issue and it seemed to me like the fitter was very knowledgeable. When it was my turn he pulled out my liner and did a shell fit, pointing out that my boots were two sizes too big and that there wasn't much he could do. He then had me try on a boot two sizes smaller from the same brand as my boots and told me it was a very narrow, 95mm last. He was right about me needing a boot two sizes smaller (for length).
As I mentioned, I had already done some initial research and was familiar with the boot he had me try on. It was a Nordica Hot Rod 95, which I had already learned in my research was a 100mm-lasted boot with a 95 flex rating. I thought the fitter had simply stated something that had come out wrong, so I asked him to clarify on the 95-last statement. He said again that the "95" meant that it had a last of 95mm and was therefore a narrow boot. I didn't correct him, but I left shortly thereafter. The guy really seemed to know a lot about how to fit a person's boot, but he clearly was not educated about the boots on his wall.
So, to my headline question, should I expect that someone who knows how to fit boots also is very familiar with the details of the boots they are selling? If I am buying new boots, I want them to know the width of every boot they sell, how the flexes compare (and not just the stated flex rating), how a boot fits in the instep area, the heel, etc., and I want them to be able to help me find the best boot for my anatomical needs as well as my skiing ability and preferences. I don't just want someone who knows how to fit boots in the sense of making punches, grinds and other alterations, but also someone who knows how to "sell" boots. Should I expect this of the revered "bootfitter?"