I found an announcement
for these cable adapters on Dpreview:
They are developed by Richard Franiec and are available for the NX200, the LX-3/LX-5, the D-LUX 4 and 5 and the DP1 and DP2. It looks very compact, I really like the idea and the engineering. His website his here: http://www.kleptography.com/rf/
I wonder if I might be able to do something similar for my Canon G7s... hot shoe covers are easily available, and I could use plastic, metal or wood to cover the release button.
if you have ideas on how to do it, please share them on this thread!