If you were to get the blank sets, would it be worth the $20?
It was worth it for me.
I've wanted a Leopold FC200R MX Black Otaku for the longest time. But not only has EK never imported MX Black Otaku's - they cancelled the Otaku line in favor of buying blank caps if you want them.
On the other hand, these keycaps offer three things that IMO are better than the Otaku's:
1) The OS keys are flat and do not have the annoying bubble.
2) No LED windows means no annoying light and a stealthier look.
3) The thick 1.3 abs spacebar is really nice.
For $20, it's half the price of WASD and you get a nice case. No brainer!