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Exactly , if you have 10,000 eth in your wallet at the time of the snapshot you would be getting 30,000 ETCV , its a ratio of 3:1 of any eth in your wallet

And would I still have my ETH or would it be destroyed?

You are definitely getting both coins, you are retaining your eth and getting ETCV for free... i hope that clears it up for you?