Indeed that is a cool solution. But also there is this option if you dont want to be quite so rustic
http://www.chainreactioncycles.com/Models.aspx?ModelID=10231Its kick ass,solid and is mega cheap. Although it does need some alteration to take the mini dh (just on the clamp tho,nothing major,only took me 10mins)
Where there is a wall there is a way. If I had such wall...
BONG that would not be good for a Meta with Metas cables under the downtube or what?!?? that seems great deal but I can't tell from the picture if a Meta would sit there or not. Can you tell me how is that part that meets the downtube? Is there room for cables in between or does it go all around the down side if you get what I mean....?