At the moment that is not possible in one account, but I might create a second account, delegate my LEO there, and use that account to curate on the LEO platform.

I was thinking of the exact same thing. In fact a few minutes ago, I tried to create a new account since I've done this process a few times via Steemworld.org but it looks like something goes wrong...as if it doesn't integrate with keychain.
Perhaps @steemchiller has a solution?