I haven't used much of their items since my droid and parts have all been aluminum. However, I wanted to try them out. Since my droid is going to be wandering around hospitals, my thought was that these could survive the disinfectant wipe downs better. My worry with the aluminum skins, which are painted, is the disinfectants would kill (remove) the paint.
Here's how they look outside the packing...
As you can see below, Andy and Alex have made excellent use of every bit of free space the plastic offers. With it, they've had the laser cutting cut out plastic templates for other parts for R2.
More stuff arrives this week...such as the JEDI lighting system!