I know that many are sceptic about the richlite fretboards and people argue that this is not acceptable on Gibsons when you get ebony fretboards on Epiphone guitars for roughly 900¤.
At first I was also sceptic about richlite and thought it sounded a bit more harsh than the ebony fretboard but now after 3 months of playing it has begun to soften up a bit and get a more "ebony-esque" character. Compared to a 57 Black Beauty this Les Paul Custom has a more sharper sound thanks to the maple cap but in other aspects it's quite similar to the 57.
The only things I were not too happy with was some small scratches on the top of the guitar and a small ding in the binding on the headstock. But I am more concerned with the sound than the esthetics so I chose to keep the guitar because it delivers very clear chords and nice tight low end. The pickups are a bit "microphonic" as old Gibson pickups were back in the days and they are a bit too hot for high-gain sounds where they sometimes tend to pick up unwanted sounds. Having that said they work perfectly for rock, blues and jazz. If you plan on playing metal with this one I'd recommend changing the pickups.
This is an instrument meant for professional use and it's a guitar you buy once in your lifetime. If you are looking for a superior Les Paul this is it. I own one Gibson Les Paul Traditional from 2009 and it is also a great instrument but there are remarkable differencies in how much more precise a Les Paul Custom is compared to standard USA Les Pauls. If a normal Les Paul is a knife then the Custom is a scalpel.
It is worth the extra cash you put on from a normal Les Paul model in how it plays and how it sounds but the price is a bit steep for a hobby musician.