For years I thought a pen holder was the kind of thing you bought at a school supplies aisle in a panic, not something you put any real thought into. What changed my mind was a block of turned walnut a friend of mine had sitting on his drafting table, heavy enough that it didn't skid when he grabbed a pencil out of it one handed. I flipped it over, obviously. Solid, finished on the bottom, no felt pad hiding a seam of cheap glue. That's the kind of object I can get behind.
The honest limit is that it only solves one problem, and a small one at that. It keeps three or four pens upright instead of rolling off a desk, and that's about the ceiling of its usefulness. If your actual problem is that you own forty pens, six highlighters and a drawer full of dead markers you can't bring yourself to throw out, a holder isn't going to fix that, you need a drawer organizer and some self discipline. I've also found that the really dense, really heavy ones, the marble and solid brass versions, are wrong for small desks. They look like they're doing a job that doesn't need doing, and on a desk that's already cramped they just eat space that should go to a notepad or a laptop.
Where it clashes is with anything else on the desk that's trying too hard. Put a sculptural pen holder next to a desk lamp with its own strong opinions and a laptop stand in brushed metal, and you've got a surface that reads like a showroom, not a place anyone actually works. It also looks a bit sad on its own in the middle of a huge empty desk, like a single plant in an empty room. It wants company, but modest company. Where it sits well is on an ordinary desk with a few other useful things nearby, a stack of notebooks, a lamp that's seen some hard use, maybe a coffee cup doing double duty as a second holder because you ran out of room in the first one. Morning light through a window behind it, pens catching a bit of shine, is honestly one of the nicer small things about a home office that otherwise looks like a disaster zone by 4pm.
Mine has gone a shade darker over three years, from handling and the oil in my hands, and there's a faint ring near the base where a mug sat for a season longer than it should have. I don't mind it. Wood pen holders earn their marks the way good cutting boards do, and I'd rather have a little honest wear than something that still looks showroom new because nobody ever actually uses it.