Just got back from the Boot Pro. My original boots were 27.5, and now I have new ones, (same model) that are 26.5.
The guys in the shop were great, and they stuck with me for almost two hours of problem-solving on a very busy morning, presenting me with a number of options and being really positive, patient good sports. 27.5 is where I seem to fall in terms of foot length. Problem is, my foot is very narrow, with a big toe that protrudes really far out. So, in order to accommodate my crazy-long big toes, I end up in a boot that's a little big everywhere else, even in a fairly narrow 97mm last.
The 26.5s are at the shop tonight, because they will both have the toe area punched out to create a bit more length, and because the bindings on my two pair of skis need to be adjusted to the new boots.
I don't think it was necessarily "wrong" to put me in the 27.5s; I'm a 47-year old intermediate, and I think they assumed I wanted a "comfort" fit, and the boots certainly felt great when I bought them, so as far as I knew, I was all set. I suspect that most intermediates getting their first pair of ski boots would be squeamish about a super snug boot that needs to be punched in order to fit. But to their credit, the two guys that worked with me, and Matt in particular, took me seriously when I said I wanted an extremely snug, locked-in fit even if that meant dealing with length issues. They were never condescending or pushy about what boot I "should" be in; they took me at my word and gave me several viable ways forward. When I finally settled on the 26.5 RSs, they completely supported the choice and worked with me to dial in the details of the fit (insole, heel snug on my slightly-narrower left foot, etc).
I'm eager to try out the new boots, and I feel that the Boot Pro treated me well and honored their fit promise. They were friendly, professional, and worked hard to remedy my issue.