I don't wear five tens so can't compare, but a vim in UK 8 seems to fit me and I usually wear a 7 or 7.5 in Scarpa instincts / Vs / vsr.
I had a pair of teams years ago and the fit of the vims felt very similar. Hard to get them on out of the box. I think a 7.5 in the vims would have been good if I could have gotten them on.