In order to claim coins from a fork you need to have the address and private key of where the coins were at the time of the fork, not were they are now. The fork location private key / address combo is still valid for claiming the new fork coins even if the BTC have since moved to a new address and or private key. Correct?
If the above is true, then I could protect my current BTC from a malice fork wallet by moving them from Etherium to the Nano S, thus associating them with both a new address and a new private key. Then I could use the original address and private key (the one from the time of the fork) with the fork wallets. This would protect the BTC and allow me to claim the fork coins. Correct?
Thanks
That is absolutely correct, and this is why it is recommended. Even if the wallet software was malicious, it cannot steal your BTC if spent to different address. You can move the coins without a worry.