The Kinesis does look pretty interesting, I'm doing some research on it. $349 seems a bit pricey, but at least it does have the full key layout (even if the function keys are rubber).
The Kinesis Advantage 2 does not use rubber dome switches for its function. They are cherry ml switches.
Cherry ML are terrible. I'd prefer rubber domes.
For what it's worth, I don't find the ML switches on my Advantage 2 nor the rubber domes on my Advantage 1 particularly offensive; if you are using the function keys constantly then your viewpoint might differ.