I've had mine for months. Slowly been replacing the keys at my leisure/pleasure. Glossy finish gets small scratches that you don't notice. Mine isn't dirty/dusty/finger-printy at all so maybe it's just environment-dependent. Treat your keyboard nicely and it'll look nice.
Overall I think it's a good board, but its resell value doesn't seem so great. For my next board I won't go for a Das for a couple reasons, resell value included. Switches are plate-mounted which means no switch switching without soldering/desoldering which isn't so convenient. Also, I really don't need a numpad and the extra bulk can hinder ergonomic mouse/trackpad use. Otherwise, I think it's a fine keyboard, albeit a bit overpriced.