Lots of VanHools out there, primarily due to ABC Bus Company's creative financing, which is much more liberal than MCIs. (ABC is the importer of these Belgian coaches.)
IIRC, they use a birdcage construction, similar to Eagle.
Not sure about their dependability, perhaps Busted Knuckle or Luke can provide some additional input from their perspective.
Plug-type front door could provide some very interesting challenges compared to the simple sedan doors on non-commuter MCIs and Prevosts.
Have a long rear overhang, lots are seen with crunched rear quarters.
Finally, IMHO, they're ugly.
FWIW & HTH. . .