As I just came across a campagnolo cassette tool that I ordered when I went through the exact same issue as you, I realise I was wrong :)
Don't worry, you're not the first. :) The bike in question is being built at a shop as we speak (so I don't have to dirty my hands on Campag ;))
@hippy started
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As I just came across a campagnolo cassette tool that I ordered when I went through the exact same issue as you, I realise I was wrong :)