Hi all,
I also did some work on the combination of NETMF and the nRF8001. My goal was to connect my Gadgeteer device to the Adafruit nRF8001 breakout. Since I could not find a driver I wrote it myself, based on the 'getting started' project that can be found on the Adafruit site. But if had known of your project ...
My effort is described here: https://devzone.nord...or-the-nrf8001/
The library could well be used for a Netduino device.
Cheers.