So I tried the new Vimeo settings. Pushed the button to "make videos mobile ready", but it doesn't work. When I go to one of our Vimeo URLs using my iPhone it loads, but it has a slash through it and won't play.
Update: Re-navigated to the Vimeo site on iPhone and got a message that says "mobile versions of your videos are being made right now, check back later" I guess they are overloaded. I triggered the change about 5...