The SEM paint is great, but you are going to be limited on color match for their aerosols. I'm not familiar with the Herbs paint, but I would expect them to be good quality.
SEM paint needs to be applied using their directions for best results. I've painted a lot of interior panels and used their directions and products, I've had really good luck with minimal issues. I would imagine that using their procedures for cleaning etc. with the Herbs paint will work well too. A call to Herbs to ask about using SEM prep sprays with their paint might be worthwhile too. It would not surprise me if Herbs paint was SEM in origin, just mixed to order for Herbs.