I haven't done uniform, but I have done other jQuery extensions successfully. How are you installing this and how are you referencing it within Li? FYI, this is what I did for QTip:
<link type="text/css" rel="stylesheet" href="/html/assets/jquery.qtip.min.css" />
<script type="text/javascript" src="/html/assets/jquery.min.js"></script>
<script type="text/javascript" src="/html/assets/jquery.qtip.min.js"></script>
<script type="text/javascript">
jQuery.noConflict();
;(function($) {
...
})(jQuery);
I couldn't use Li's built-in jQuery, but this worked.