The unisolar panels are built with something called amorphous silicon technology. Here is a link to a PPT presentation about the technology - http://www.google.com/url?sa=t&rct=j...gn_-ZGHP6dH4vw
Basically the downside is that the unisolar panels are less efficient than modern rigid panels - that use mono or poly-crystalline technology - so per square inch you only generate about 50 percent of the watts you could with rigid panels.
The positives are the panels are flexible, are trivially easy to install, and are more shade and angle tolerant than rigid panels. They have bypass diodes built in across every cell, so even if a cell is completely shaded, the panel will only lose the output of that cell. As an Airstream DIY guy, I liked that I could just lay the panels down on my roof with no muss and no fuss.
I did measure the two panels that I have with a digital multi-meter, and via my charge controller, and they are both right on spec.
I do not think it would be very easy to remove the panels from an airstream roof. The mastic is really sticky - it's designed to hold the panels down on a metal roof in a hurricane! I am sure they will come off if you pull hard enough, as I have seen used panels on eBay, but I expect they will leave a sticky black mess on the Airstream roof.
What I understand is that despite the unisolar bankruptcy, solar gurus expect the availability of more types of flexible adhesive solar panels to expand over the next few years. Something called CIGS technology is apparently slowly maturing and there are multiple vendors trying to get products to market. The idea is to figure out how to inexpensively print solar panels onto long rolls of plastic material, rather than having to slice cells out of hunks of silicon crystals.