When I was younger and still believed "the hype" I thought I needed one.
The Hush sucked donkey balls, gate trigger and release not natural at all, the Decimator was better.
My opinion, you don't need it. I have a TK421, Grand Tarkin, B3K and Blueberry so 4 gain = noise pedals and just stomp them on or off as needed and it is never an issue. If you do want one get a Decimator.