I really wanted one but saw one in the flesh and it wasn't as appealing as I thought, and my other concern was in the world we live in that it might go walking.
A £2500 piece of carbon thats held on effectively by 4 bolts, a tight fit and some tape could wonder off within I'd say 2 minutes with care, or 30 seconds if someone wasn't fussed damaging your spoiler.
My GT-R was vandalised at Trax just gone so it only really put things back into my mind.
My valve caps got stolen, I had chewing gum put under the wipers and behind the door handles, my rear diffuser mesh got kicked in and rear carbon diffuser stood on and cracked. I had bottles shoved up the exhaust and someone key'd part of my vinyl wrap on the back.C**ts!
Really sorry to hear that mate. What did they do? Any witnesses?