I've just unboxed updated Redbear Lab BLE shield 2 for a test run, and it works like a charm with the Uno and the EvoThings demos.
The bears have added an antenna port, for extending the range (you need to solder its connector on), and the new reset button also
resets the Arduino, which is nice. It's also now easier to stack other shields on top, as the ICSP header feeds voltage and passes through from the Arduino pins. More here: http://redbearlab.com/bleshield/
course.