I finally tested an android app in cloud. In a farm, more precisely (or a farm in the cloud?) But it took ages to start up (prepare devices ?). I wish they will use some sort of a clever virtualization mechanism instead of running real devices which may be the reason for the slowness. Once the initialization phase is done (when the wait is over), it is amazing to see how app is getting tested simultaneously in multiple devices. But the overall slowness killed my appetite to use this as a CI testing tool (which triggers for every commit) rather I would like to use this in regression level. Any way this is still new and, should not judge its capabilities today.
Lets see what google will offer in what they call Cloud test lab