The quality & fitment is excellent, the carbon weave feels coarse and has a matte effect. In terms of maintenance, the alcantara collects a fair bit of dust, should be fine if you clean it regularly. It's more durable and doesn't scratch like Piano Gloss, Wood & Pearl trim does.
I would recommend getting the M Performance CF trim, although it's a little overprice.
Here's some pics of mine fitted with the complete set.
