MAN! That looks tasty!
Back in-the-day, before I discovered "smokers", I used to do rotisserized chickens and stuff on the propane grill....still got that device around here somewheres.

When I was a lad, Dad had a natural gas grill that he rotisserized with regularly. He could make a venison roast on that thing that you could literally cut with a fork.

Seriously though.........how hard was the clean-up on that unit?