These knives (aka OTF Extractor 1600) were available back in 2009/2010 from several places but are now sold out everywhere (as far as I know). Your best bet is to often check the Junkyard
Since I haven't posted any updates in a while I thought i'd share the evolution of my new set up.
I've moved a couple months ago and now have a dedicated den/office.
Since the room has white tiles and walls, I decided to get a couple of Ikea Detolf cabinets (in white as well) to try and make a nice "invisible" display.