Evolution is a separate chain and will have no relation to any EOS key pairs. The airdrop to registered users was just one of the many ways to verify that the airdrop was being sent to core contributors and non-exchange owners of the EOS token. The EVO token will be distributed as an ERC-20 token and the swap to a native EVO token on the Evolution blockchain will have no correlation to the EOS blockchain. This is an adaptation of EOS and not a connected chain. The public wallet ID ( EOSxxxx) is also not being used for anything. Registration was only a means to identify airdrop participants. To receive the EVO native token we'll establish some guidelines in the months ahead on how to interact with the Evolution blockchain. Which, again, is not interconnected with the EOS chain or it's users private keys.
Hopefully this gave your more clarity around your question.
RE: Evolution Airdrop - May 10th