Seriously, vertical doors in PR must cost like $25 and a pack of gum. Freakin' EVERYBODY out there has them! What's up with that?
Also, when did they stop calling them "scissor doors"? I'm pretty sure that's what Lamborghini still calls them. Strange. I always thought that sounded pretty cool...okay, anyway...
Not sure I can say exactly what "butterfly doors" are. Sounds like gullwing doors like on the old Mercedes 300SL or the Delorean of Back to the Future fame. Can't be 100% sure because everybody uses different terminology as demonstrated in my previous paragraph.
Ask the company to send you a pic of their "butterfly doors" done to anything and then post it up.