Could someone please go into detail about the difference in use case between SCRT and SEFI. Is SCRT no longer necessary in order to participate in the distributed exchange?
What is the difference between ETH and UNI/SUSHI? There’s the answer to your question. Secret is the native coin of the platform just like ETH. SEFI is the governance token of SecretSwap (and whatever other applications decide to integrate it as they are built).
You will always need SCRT to pay for gas, just like you use ETH to pay for fees on AMMs.