Yes I did.
Here are my findings:
Export from C2 as Cordova to XDK (to the 'www' folder of the XDK project)
Add the AdMob plugin to XDK (only PORTRAIT apps can successfully launch an iOS full-screen ad)
Build as iOS
Test on your iPhone etc.
Currently, I can only get admob ads to work in portrait mode.
Yes, anything iOS build etc and your pretty much on your own. I've started multiple threads trying to unwind the mysteries of iOS and C2 but they usually spin-off into irrelevant responses until they fade out.