Forget time for now… Is that time lapse from the official chamber camera? It looks great!
OK though. I did my two color benchy on my J1 in about 2 hours (I don’t recall exactly). So keeping that time with double the tools is pretty slick!
The U1 print speed is faster than I managed, even though the IDEX swap is slightly faster [on the J1]. And way, way faster altogether than a single extruder of course.
Very impressive, and it looks clean from here. Could we see some closer photos of the benchy?
I think you didn’t mention the scale! Is this 200% of the original posted on MakerWorld? Because this is what I get if I download the 3mf and scale it 200% for an AMS system:
2d 20h with 1.2kg of filament
So U1 is 3.4x faster and less than half the filament? Saving half a spool in purge waste!
And yours might be slightly bigger even! This screen shot is with 160mm z height.