What +Jacob Serrano
said. More functionality is always preferred, but Plex should still work with this brand new technology right now. Besides, tab share is supported in the Android and iOS Chrome apps. So why not connect your device to the same WiFi network (required for basic Plex usage), go to the localhost URL on the phone itself, and control it from there? You can fast forward, browse content, etc right from your Android phone and then, when it's time to watch, start video, full screen, share tab. Boom. That will more than suffice until a real app comes out.
All things are possible with #android