Android : Android: Error - App has same packaged different signature

I am getting an issue where android studio is saying

 Installation failed since the device has an appllication with teh same package but a different signature. . . .. 

This is correct, as I recently signed an APK and uploaded to the beta area of my play developer console.

And now I am trying to debug it locally and by default i believe that all android projects are signed by the debug keystore hence the signatures would be different.

What is the best way to attach this ? Would it be possible to sign my debug version with my release key, is there a potential danger here ?

How would I force the signing of my debug version with my release keystore without loosing ability to debug etc ?

Or should I just keep uninstalling and reinstalling the different versions - seems the worst possible workaround :-)