looking for advice or insight on the Itasca models

Some of today's "Caps" are more of a "Tiara." They may do away with a couple tricky side-to-cabover seams, but certainly nowhere near the majority.

What even a Tiara should do, though, is allow the very front edge of the roof to be crowned. With no Cap/Tiara, the siding material they use has already bent, to form the cabover, and can't bend the other way to form a roof crown.