I've been using Future/Klear for years and never had a problem. I spray it over the camo in a light coat, then after an hour spray a thicker coat. Once it has the sheen I'm looking for (the matte is all gone) I let it sit for at least 3 days to fully cure.
I've put on over enamels, acrylics, and both enamel/acrylic schemes. Key is letting the paint/Future fully cure.
I've used Micro-Sol, Micro-Set, Solvaset and Daco Products' strong (red label). I've even used Future as a decal setting solution but it looked overly thick. Never had any problems, but then I lightly brush on the setting solution. I don't pool it or lay it on heavy as I've had that destroy the decal.
Tim