This is something I've been wonder about since day one. I seem to be one of the few people I know who actually likes using Siri for acutual productivity, but I just can't fathom having to bring up Siri EVERY time I want to pause, skip, change volume, take a call, etc.
This is actually why I thought AirPods were being delayed, because Apple was trying to fine tune a catalog of taps and long presses to act as controls similar to EarPods' inline controls.
Even the Bragi Dash and *shudders* Samsung IconX, have touch controls for more than one interaction.
I feel like it's kind of heavy to have to double tap, wait for the audio to pause temporalily, wait for Siri to activate, tell Siri what I need, wait for Siri to process it, and wait for Siri to activate it. At that point, I might as well just use my watch or phone to pause, skip, reverse, take a call, change the volume.
Not saying that I wouldn't use Siri on it, I will, even for these simple tasks (sometimes), and I really can't wait for these to arrive, but I think Apple could've slipped in more articulate touch controls. Nonetheless, AirPods are an engineering feat, and will undoubtedly improve with time.