Nope, i'm not Mark Longridge, really
I bought a couple of these custom cubes from him and truly, they are pretty cool, turns smooth(lubed) and has that weight resembling those rubiks.com come with.
The vinyls are stickered quite neatly and these are really playable not just for decoration
Try solving the Shepherd's Cube(the one with only arrows), the difficulty of that 3x3 variation is comparable to the Tartan Cube, and Mark is selling the Tartan soon. Be sure to buy the legendary Tartan(one of the hardest 3x3x3 pattern ever created)
Again, i'm really not Mark