A good friend of mine delivered a set of these to me in Taipei just a couple hours ago.
These are my first doubleshots - all I can say is, WOW! These caps are phat and tall - they are huge compared the standard keys.
This set oozes quality. The brown is so dark that you have the stare a bit in the right lighting to see it.
I used to have a set of PBT Ninja keys on my Filco Majestouch TKL. Those keys felt crisp, but these high profile sphericals have a satisfying thunk on strike. The smoothness of the thick plastic keys make me feel like I'm typing on a typewriter rather than on a keyboard.
The only complaint I have is, the keys somehow feel crowded - I think it may have to do with the high profile. Although I seem to type faster with them, my shoulders feel somewhat more stressed; it will probably take some getting used to.