Yeah let us know how you get on.
What finish is your armrest? I checked with the dealer I've been in contact with and they've said its black leather with red stitching. I found one on ebay (obviously not genuine Seat) for £43. Does it sit solid enough with the Velcro stick pads yeah?
Mine is leather with red stitching too. I've seen them on eBay at £176!!
Prices must of increased as they used to be £130 max. Mine sits fine with the velcro pads, but can also be removed easily when needed (not that I need to).
Ebay one doesn't look leather...
This is the same as mine and is genuine.
http://www.ebay.co.uk/itm/Seat-Leon...184964?hash=item418a7ae884:g:MNsAAOSw1-RUZJ2r