yea, I thought it was pretty freaky when I first read it. I always knew you were sprague, but that was based on entirely different evidence. I was stunned when you/sprague mentioned parking the keys in wikileaksland e.g. to keep them out of the hands of the nsa. I understand how this can be uncomfortable for you, it was tough for me when barge outed me as janicen (I had mentioned something about a Scottish choir in Edinburgh that tipped him off).
In any event your idea is an interesting one, there has long been the numbered swiss bank account, perhaps those banks will double as key repositories who presumably would be stingy with nsa requests.
The above content is my opinion.