Have any notifications on your watch that you want to vibrate but they don't (examples are WeChat and OKCupid)? There's an easy work around with Tasker!

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  Create a new task, insert the following actions:

  
  
  
  
  • Notify Cancel
  
  
  • Launch App (whatever app you want to notify with [this clears the native notification])
  
  
  • Kill App (same app)
  
  
  • Notify Vibrate (set the text to %NTITLE and the Title to whatever you like)
  
  
  
  


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  Next create a new profile based on the "Notification" event (set to whatever app it is you are working with), set the task to the one your created in the previous step.

  
  

If everything works correctly it should clear any outstanding tasker notifications, open and close the app to clear it's notification, and then notify you with a vibration on your watch.