I said I wouldn't revert back to the flat blade after investing in the necessary equipment to mill the more traditional sloping blades, but a flat blade with a blunted edge is really a must for PVC whistles, since they are too loud and tend to be too shrill in the upper register with a sharp edged blade.
I'll begin production of soprano D whistles within the next few days, with Eb and C whistles to follow shortly if there are no complaints about the soprano D design.
I'll also probably offer Eb, D, C sets with one head and three tubes, but not until I receive positive feedback about the design of all three.
You will eventually be able to get whistles from me in all keys from at least soprano Eb down to tenor D.
There's just not much demand for higher than soprano Eb, and my hands are just too small for me to be able to test the design of anything lower than possibly a tenor C, since most tenor D whistles stretch my fingers to their limit.
My whistles will be unpainted, and the soprano Eb, D & C will be made from cream colored CPVC with black PVC trim (plumbing code removed).
The design will be a hybrid between a Silkstone and a Burke... which ends up looking much like a Susato from a distance, but closer inspection reveals significant differences.
I'll try to have some pics and sound clips posted shortly, so stay tuned!
Oh, before anyone asks, I'm still not taking orders... I want to complete a batch of at least a dozen before I officially begin selling them, and I might even give a couple away if I can think of a fun contest.
Of course you should be made aware that my head is literally full of useless information, so any contest I had would require knowledge of obscure trivia... answers you wouldn't find with a Google search!
ME ME Send one ta me 
Stacey has the most bodacious fipples! & Message board
Those were some mighty interesting milk beverage recipes you posted. Ok, Larry what you got? 