Okay, so I'm the outlier here. I use Solvaset, and only Solvaset, on everything, including Archer rivets.
You just have to be careful and quick. Set them in place, wick off the water, let them set on there. Then
ONE quick brush of Solvaset and do NOT touch them .... AT ALL... until it dries.
I have used Solvaset on every Archer rivet decal I have ever used. I don't even own the Microscale setting solutions.
Maybe that's how I get them to stay in place on brass. They don't stick nearly as well to brass as they do to plastic.
But they will hold up until you get some paint sprayed over them if you handle them carefully.