Hello, i've developed some games for BB10 during Port-A-Thon, it was a great event. I had to run games on Ripple and then export to simulator, but BB10 simulator had a bug couldn't render Canvas, otherwise Playbook runs fine.
It's nice to have a plugin and exporter that we couldn't have time to access private API.
I guess Ashley can make another exporter which generate config.xml for BB10 like he did for PhoneGap. Then export to Ripple. You should contact him.
Most APIs for BB10 we would require like Application, Camera, Context, Current User, Dialog, FileTransfer, Push, Invoke Elements, etc.
I'm sure you will love Construct 2, you make games sooo faster without writing the codebase, just click events and type variables.