Actually to me there wasn't an overwelming difference in the FOV. The T6's didn't give me more of a spacewalk feeling then my XW's. Something I was waiting to see. Certainly not the difference going from 45-50 in the Ortho's to 70 anyways. But then again I like using the Ortho's too they have their uses. So the FOV difference certainly wouldn't come into the equation for me.
It's the over all performance, comfort, classy look, and other features. The smooth adjustable eyeguard stays where ever you leave it. You can remove the upper section, which reveals an outer thread on the element housing. Which fits a pentax camera adator directly to the ep. nice for luna and sol photography and birding if your into it.

btw, anyone here tried either the 30mm or 40mm XW's, in a scope f/4.5-f/6?

regards