I think I’ll go for the second card. Sounds like it will be well worth it.
My system will be targeted to more budget conscious productions so if I can pack in extra performance for not much extra cost it will definitely be a good thing.
Mark an add-edit where you want the effect to come in and go out… add the effects to the appropriate part of the shot that you want saturated/desaturated and then add a dissolve to fade between the two.