Yeah but John, did you watch the video? (Just start at 2:00 if you want to skip all the extraneous lead-up BS)
The tin snips work just fine!
And I already have tin snips...why spend money on something that I clearly don't need?
(And by the way, I've got the same cell phone I've had for many, many years, and the audio system that was in the Boxster I bought in 2006 remains, unchanged.
)