Having a private key signing everything you do and be traceable to you and your device(s) is pretty damning. You might as well go the extra mile and send a PGP signed email to your boss telling him to eat your ass with trailer gravy. 

 Yep. I’d bet money those signed messages will hold up in court too. Anonymity and privacy is not the same. And anonymity can be fragile. 

 We're gonna need you to come in on Saturday....