Most swept wing aircraft have inherent roll stability.
Secondary effect of roll is sideslip. Sideslip increases the effective span of a swept wing and, therefore, it produces more lift and rolls back towards wings level.
So, yes, you will have to hold a small amount of roll input to maintain X angle of bank.
But bear in mind that in a climbing turn you will require out of turn aileron to maintain X angle of bank.
Welcome to the can of worms that is aerodynamics.