well... their GVWR's are typically much less than other or older busses... they definitely rust out much quicker than some of the other brands...
are they safe busses? of course they are decently safe because of new technology... just like modern cars that have much lighter weights and thinner metals but still score better in safety ratings because of electronics, stronger, lighter FRAMES... but to me the sheet metal used on them for the sides, floors, roofs is not nearly as strong as older or other busses..
I mention this because for someone building a home or a camper, rusting out quicker spells big issues... many of the busses here will never benefit from any safety improvements as the owner isnt building something to be travelled 10,000 miles a year.. (some are)..
a well cared for IC is quiet, comfortable, smooth, and drives beautifully on the highway.. but from what I see in the rust belt of the midwest.. are IC's rusting quicker than birds and thomas;s of the same age... and by rusting I dont mean a little surface around some rivets...
-Christopher