This puzzle is now mass-produced as Pyraminx Duo by Mefferts.
Rob's Pyraminx was suggested at Rob Stegmann's puzzle website. When analyzing all twisty puzzles with a tetrahedral geometry, Rob found an edge-less pyraminx design that has not yet been implemented. Here it is. It has a Skewb mechanism inside, so the puzzle is a shape mod of the Skewb.
This puzzle is arguably the easiest non-trivial twisty puzzle :-). What is it's God's number?
Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.