I was one of the largest proponents of the Mako skates, both the I and II when they launched. I skated in the MLX before those. Now having gone through each version of the skate on up to the True version I can say that the fit is largely unchanged. Same wrap, some minor changes such as a taller toe box (at least in my case).
Basically, you won't have much to worry about if anything at all. Adjusting on the ice is always varies from person to person.