I'm far too driptarded to use those.
Speaking strictly personally, even without the NR-R, I don't mess around with ceramic cups. And if I can't rebuild it, I'm not all that interested in it. I like the customization, not having to rely on vendors & just having some rebuilding supplies that will work with everything instead of boxes of cartos/attys.
But then again, I don't drip anyways. I toyed with it once, never got it & quite frankly it's just too inconvenient for my taste. I like to fill my
tank & forget about it for a while. I can't sit still long enough to drip, drip,
vape,
vape, repeat.