This is interesting. Would the swapped token be on the old wallet or will it be on your Secure Trade wallet? Let's say I have WOD token, an erc-20 token, which is stored on my MEW and I want to swap to ETH. By integrating to your system, will I get (for instance) 2 ETH on my MEW or will it be on your wallet?
Yes, you can exchange your WOD token for an ETH token from your MEW wallet directly with Secure Swap (or from any wallet for which you hold the private keys).
At the end of the exchange, you have the 2 ETHs on your MEW wallet, without using any other wallet.
The same applies to hardware Ledger/Trezor type wallets.
Philippe