Yup, does work. You can move the "return to text" link for older/other devices to the end of the footnote (looks nicer) and not ruin the layout!
Code:
body.xhtml . . .
<p>Blah blah bleach blah<a href="../Text/footnotes.xhtml#fn01" id="ft01">[1]</a> bloop beep burp bing.</p>
<h2><a href="../Text/footnotes.xhtml#fn01null" id="ft01null"></a>Chapter 2, it is</h2>
footnotes.xhtml
<p><a href="../Text/body.xhml#ft01" id="fn01"></a> Please note, the foot. <a href="../Text/body.xhtml#ft01">Click here to return to text</a></p>
<h4><a href="../Text/footnotes.xhtml#ft01null" id="fn01null"></a>Footnotes for Chapter 2</p>