I had a go at coating one of my prints with Dorland's wax medium, as a way of protecting the surface for framing without glass. I quite like the results, gives a slight sheen to the print which makes it feel higher quality in person.
Here's two of the same print (on two different papers, which is why there's a significant colour difference between them). Coated on the right, plain on the left.
Here's the coated print framed without glass, my phone camera butchered the colours but you get the idea. I really like how it turned out, museum glass might give a similar result but compared to normal glass the lack of reflections and better contrast is really noticeable.