The eagerness with which you desire conflict on an issue like this is bewildering. Maybe this isn't the forum for you.

I've also shared bike lanes with skateboarders without any issues or "wars".

You bring up a reasonable point (could this change road/sidewalk safety, how should that be managed, etc.), but perhaps try changing the tone with which you're raising that issue.

>Will cyclists give up there precious bike lane space?

I think you should stick to commenting on YouTube videos.

I don't think they have to, since this is not a bicycle.

These are probably too fast (and powered) to be considered pedestrians. They'll like suffer the same limbo the Segway did, and end up with nowhere to go.

Naw, I'd be able to use them on the sidewalks here in San Diego without any issues. And with the range and ride time they have I could get most places I want to go. There are plenty of places which allow electric propelled scooters (for example) or bikes on sidewalks...just so long as they don't go faster than 15 mph.