Your post prompted me to go checkout ebay because I've wanted a wireless release for my G1 and I came across this and decided the price was right to give it a shot and made an impulse buy.
Remote Shutter for Panasonic Lumix DMC-G1 GF1 GH1 FZ30 - eBay (item 160492284335 end time Nov-10-10 08:33:59 PST)
Overall I am very pleased and think it is a heck of a deal for $20. I have been using it indoors for pictures of products as well as outdoors for long exposures asd the ocasional lonely boy self portrait. Today's shot involved the Gorilla pod and the 3 second timer.
View attachment 153044
Untitled by rperks1, on Flickr
So is that you riding down the road in that shot, having triggered the the shutter from the bike, or is the rider too far for it to work?
OT - I like your Riv shots a lot BTW and the Rawland shot in your gallery. I've been riding Rivs since 1997. At this point, a Bleriot built as a townie is the only one I have left, but I still have an old RB1. Mostly riding a Spectrum custom these days.