Ok, an update.
I received the frame, but a little rocky road dealing with ICAN after the purchase.
First up, weights:
Frame, 58cm, 1241
Thru axles, 79
Fork (uncut), 413
Seat tube, 280
Headset bearings, 65
Handlebar-tube plug, 40
Handlebar-tube spacers, 90
Not ultralight but for an aero frame not bad either. Still a sub-8KG build with the other components (Ultegra 8020).
To get there though, don't use the separate stem and handlebar option. The stem itself comes at a whopping 322 grams. Bit of a waste when trying to shave off weight everywhere else. I contacted them telling it's a bit odd they take that much care to get the frame weight down but then give you a solid piece of ALU to weigh it down.
I asked them to switch for an integrated handlebar instead but that negotiation was rocky...
In any case, once the handlebar arrives I can build up the bike beyond just the rim here.
On the upside, the frame accepts the Gravelkings 32C, run tubeless on a 21mm internal width rim (28 outer). Feeling good about the build and will post another update once I get the handlebar in.