so just looking at it, an RF22B will not fit on the face area of a tinyduino breakout board. Its too big. you could do it, but just eyeballing it, it looks like it would impinge on the drill holes in the corners. Also, the RF22B is a 3V3 system, and the tinyduino is a 5V system, so you need a level converter, like a 4050, which will need space to mount...
We're working here on a tinyduino breakout board connectorized in molex 53780 that would allow you to connect to a remote board with an RFM69HW. If there is demand we could maybe produce one that would work with an RFM22B...
Anyway, we'll be baking the first batch of boards and testing them in the next few weeks. We'll post the designs and so on once we have tested them and verified they actually work...
/malcolm
myTribalTotem