In reply to Kerm: http://www.altberg.co.uk/
Probably not exactly what you have in mind, but they do a boot that will take a crampon. Worth knowing about anyway if you've got unusual feet (and even if you haven't as they are beautifully made).
Because they wouldn't sell many, same reason as I really struggle to get winter boots too (but at the other end of the spectrum!). It sucks being an odd size, eh?
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