You can pretty much remove the silvering by either using a warm vacuum press, or by gently heating with a hairdryer, and rubbing with a microfibre cloth, so the glue and the warm laminate conform with the paper texture.
Rag Photographique is a pretty smooth paper. I've tended to use the DryTac Satin Matte, or photolustre for most work, but none of the these has been folded.
I'd still look at a spray.