No, each leader must be either 100% free or 100% premium. That means there is currently no way to have both free and premium portfolios for the same leader.
However, if you are a leader on multiple exchanges, each individual leader can select to either be free or premium.
Imagine you have two different exchange accounts connected to Shrimpy - Binance and KuCoin. If you are a leader on both of those exchanges, you could be a premium leader on Binance and a free leader on KuCoin if you wanted. However, you would not be able to have some free portfolios on Binance and also some premium portfolios under the same Binance leader.
If you have any additional questions about Shrimpy, don't hesitate to reach out to email@example.com or use the internal Shrimpy support system to ask questions.