JQM is more for native looking buttons,menus, and other UI elements.
Everything is all about AJAXing in content these days. Iframes are the last millennium’s solution.
With good CSS and AJAX, you’ll be able to make a site that runs like a champ on all platforms (not just mobile).
You may get different opinions if you post to the jQuery Mobile area of the forum.
Google is your friend here, Just make sure you add jQuery to all your searches.
JΛ̊KE