Why shouldn't I go this route? (AC Roof Delete)

Not knowing what it's power draw is, can't comment on that. But cost, apparent lack of local service/support (mostly a european item, correct?) and does it have enough cooling power (for lack of a better word) since it only cools at most about 20deg F.

But I understand these considerable "upgrades" to your camper and truck are more of a hobby and not necessarily based on ROI, so go for it!
Interested to hear how well it works.