I have a pair of these now, that I switch between my tele and alpine boots. I am going to get another pair this year because I am sick and tired of taking everything apart each weekend when I swap gear.
I cannot recall exactly how the guys at the shop set me up but whatever they did, it worked great. My boots are very tight, so much so that without the instaprints, my toes would get crushed. The current footbed, because of the perfect arch I suspect, pulls my toes back just enough to make sure I fit perfectly in my boots.
I remember flexing my toes towards the sky when they built them, but I cannot recall if I was standing or sitting. What are you guys doing when molding these to people's feet, and have any of you asked clients to raise their toes?
My thinking is that raising my toes heightens the arch, so standing would help put it in a normal position. BTW, I am fairly flatfooted and I always felt the my arch was collapsing prior to using good footbeds.