Hi rusty,
Yes, it is possible to do it with Views + Jquery
See the live demo:
http://luo195.discover-wp.com/2014/06/20/possible-to-swap-excerpt-with-post-body-using-jquery/
user/pass: xgren/111111
Content template:
http://luo195.discover-wp.com/wp-admin/post.php?post=13&action=edit&lang=en&message=4
<div class="post-excerpt">[wpv-post-excerpt more='<a href="#" class="more-button">more button</a>' length="20" count="word"]</div> <div class="post-body" style="display:none;">[wpv-post-body view_template="None"]</div>
Js:
jQuery(document).ready(function($){
$('a.more-button').on( "click", function( event ) {
$('div.post-excerpt').toggle();
$('div.post-body').toggle();
event.preventDefault();
});
});