You ABSOLUTELY do not have to create a recovery drive from a Snapdragon based device. I've done it multiple times from x64 Windows for both a SPX and 11.

Hmm, thank you, that's good to know. Did you just apply the Snapdragon driver zip over the x64 recovery drive? It didn't work for me when my OS killed itself but I could easily have done something wrong in my panic over the machine not working. Since I only have the one Snapdragon device, I was making the assumption that it would have worked if I had a second one, but I didn't actually know that.