The silicone cover that came with FiiO X3 2nd gen is a lint magnet so I bought the leather case. It's perfectly designed for the player, fits wonderfully well. Only complaint is that it if you want to remove the case you'll need to apply a lot of force.
One trick I found to easily remove the caae is to connect a USB Micro B cable and push the player out of the leather case. Hope this helps.
Looks classy on my fiio x3 2gen..