Just found a 2nd hand tripod quick release plate to mount on my 'heavier' Gorillapod. I got the SLR Zoom Gorillapod, not the one that comes with a quickrelease.
This adapterhttp://www.adorama.com/TPQSS.html fits perfectly! If mounted just a little rotated, the battery latch can be opened fully. And the camera can stand straight with the heavy Canon 50/1,2 or the small zoom. The camera plate ony just clears the 20mm lens tube, but only just is just enough.
I have to fiddle a bit to make the connection a bit firmer, but for now I am happy!