Well, it turns out that my cool new Digitalis is an outstanding form of a variant of Digitalis purpurea that has turned up on occasion since the 1800s.
Graham Rice of the Royal Horticultural Society (RHS) in the UK made an excellent post on his blog re. my "new but old" plant over at his blog The Transatlantic Plantsman, including an intersting explanation from a former plantsman at the RHS.
In any case, if you Google "peloric Digitalis" you will find all sorts of interesing reading regarding this type of occassional variant.
Upon Graham's suggestion, I will isolate this plant and collect seed in attempt to create a new strain.
Here's to dirt your nails.