I'm sure Derek is not talking rubbish here, but honestly, I've never sealed with Future in-between enamels and a water-based wash, nor between acrylics ans a water-based wash. Go easy with the wash at first. If you're not happy, add a second wash, maybe a third. The reason I do not want to use Future is that it leaves a certain shine and I do not care much for that on my AFVs. That's exactly why I do use this water based wash 'cause I know it will NOT react with anything under.