So it looks like people are confused about how to fallback from jQuery 2 to 1.9 for IE. Is there any reason why this wouldn't work?

jQuery 2.0 --> 1.9 fallback for IE.html

<!--[if lte IE 8]>
  <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
  <script>window.jQuery || document.write('<script src="js/jquery-1.9.1.min.js"><\/script>')</script>
<![endif]-->

<!--[if gt IE 8]><!-->
  <script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
  <script>window.jQuery || document.write('<script src="js/jquery-2.0.0.min.js"><\/script>')</script>
<!--<![endif]-->