Well I have built my first mobile app using PhoneGap. Here are my thoughts:
Publishing – Publishing on multiple devices was pretty easy. After I had finished my app for Android, it took me maybe 30-45 mins to get it ready for publishing on iOS, which is pretty impressive. Keep in mind though that in order to publish on Apple (or even get your app on your iPad/iPhone) you need to pay the $99 developer fee. On Android, that fee is only $25 which is much more reasonable. Also, Android lets you publish your app without review, Apple needs to review (takes weeks at a minimum) and might actually reject your app.