I have successfully ported the Bluetooth low energy SDK for Arduinoto the ChipKit.
I started with the Bluetooth low energy API for Arduino. The ported sketch and library is available from my box account as a zip file. (unfortunately there does not seem to be a way to attach files to this post)
(ble-sdk-chipkit.zip 460.7 KBytes)
More details are present in the readme files and documentation in the download.
The shield that I used is here
The code has been tested with an UNO32 and the shield with nRF UART (free app to send and receive data over BLE).
Apple iOS (nRF UART):
(iPhone 4S or later, iPad 3 or later, iPad mini or later)
Google Play (nRF UART):
(Android 4.3 and later)