In reply to More-On:
Their old website use to argue they were unique in using something like offset lasts... I can't recall the technical term. . Now scarpa, notably, claim many different last shapes but I suspect boreal were leaders in pushing different boot shapes. So the last was not 'straight'. Simply as that. Whatever last they did use, it worked for me.
I did have some trouble years ago with meindl boots which struck me as being lasted straight and pained my feet some. Nowadays I use Meindl .... so I maintain boreal educated them!