Have you talked to your printer?
There are no coated and uncoated inks when you get on press. Those designations are for the screen representations of how that ink will look on coated or uncoated paper.
So if I am designing a wedding suite with raised ink(litho printing) and the bride wants a 2 color job (navy & gold) should I look at coated or uncoated swatch books?
How do you mean "raised ink" – die stamped, flexographic, gold-foil blocked or what?
Coated will be fine for your "Navy" colour.
Coated refers to the paper stock.
Your normal office paper is uncocated. And your brochures with a shiny finish are coated papers.
As Peter described, the colours referred to as Coated and Uncoated only matter when it comes to the physical paper and if the paper was coated or uncoated.
As with paper that is uncoated, it's a rougher finish, a more pourous paper. Therefore the inks sits into the paper more, that is, it saturates the paper with ink.
With coated paper, it does not saturate as much.
The colour values given to you onscreen for Pantone Coated and Pantone Uncoated are a direct reference to the paper type. You grab yourself a Pantone Book and look up the Coated value of the ink in the Pantone Book. And you can see how it looks on Coated paper. You can then look up the same colour in the Pantone Book for Uncoated and see how that colour looks when printed on Uncoated paper.
As it's the exact same ink - the colours vary from paper type to paper type.