Yeah the widgets don't show up on my LG Scoop's Open Wave browser either, I think because they are JavaScript based. I've tried to use JavaScript on my Open Wave browser before and it doesn't seem to work all that great or even at all. Don't know if its possible but maybe an option could be added when creating widgets to either use a text link or a form type button, it might allow the widgets to function on these mobile browsers.
I just tried loading a widget on the Samsung Instinct's web browser and you can see the widgets but it won't let me select them to perform a function. They are just there and won't do anything.
I would love to see the mobile support extended to more devices if possible, it would be a great thing to work toward while ioBridge is still in beta. I think the reason it works great on the iPhone and iPod Touch is because the browser is basically the same as a desktop browser and JavaScript, etc loads just as it would on a desktop.
A nice site I found to test mobile functionality is:
http://mtld.mobi/emulator.php