I dug a little bit further into the new Peripheral Discovery Library in BlackBerry OS 10.2 and discovered something very interesting. It seems like BlackBerry has specifically called out support for the Android Open Accessory Protocol which allows devices to easily be detected and setup communication with your BlackBerry 10 device. This protocol was specifically created by Google to make sure that devices could connect without having to pay licensing or fees so it does not have to use USB Host. Electronics Weekly has a good description of what Open Accessory Mode is all about.
Also of interest is that the Peripheral Discovery Library also calls out support for Networking, Audio, Display, Printer, and other custom types. Hopefully this means we will be seeing way more accessories supported on BlackBerry 10 in the near future!