I have an Extension Attribute that I use to find Bootcamp parititions. It's available from here on my GitHub repo:

https://github.com/rtrouton/rtrouton_scripts/tree/master/rtrouton_scripts/Casper_Extension_Attributes/detect_bootcamp_partition

I have a blog post that explains how it works available from here:

https://derflounder.wordpress.com/2012/12/17/detecting-boot-camp-partitions-with-casper/

Awesome rtrouton! I'll have to do some more testing, but it looks like it is pulling them in. Thanks!