I wait R5E Black six months, I shouldn't done that and I will never do that again. Last 2-3 months I had CPU and Memory and I still waited motherboard. And I would still wait but I cut and decide to go with R5E, not to build platform before new show up.
And any ASUS ROG Z170 motherboard become "Formula" with EKWB Monoblock... Impact, Ranger, Gene, Hero, Extreme.
I say "Formula" because probably guy who want Formula want VRM cooling.
With EKWB Monoblock he get CPU/VRM cooling with only 2 compression fittings, for Formula need 4.
If someone buy Hero + Monoblock price will be similar as Formula + CPU waterblock.
Only Monoblock is much nicer and advanced solution compare to CPU+VRM block. Sometimes need 6 fittings if someone want to cooldown complete motherboard and CPU. Logic Less fittings better pressure and temp and less chance for leak and nicer look.