Submitted my first Construct 2 app for Windows Phone, without using the plugin initially, but unsurprisingly failed, due to incorrect handling of the back button (I was porting a game that I built for Windows 8, and was perhaps a bit hasty, but wanted to test the process).
Once I added the plugin, it was pretty easy to add the handlers for the back button events, and I resubmitted, and hopefully will pass this time (I also added support for all of the tile sizes).
Thanks to thehen for the plugin...I'm optimistic that my game will be in the store in a few days. <img src="smileys/smiley1.gif" border="0" align="middle" />