I have no idea why they chose to use a completely new nozzle design instead of simple V6 compatibility.
You can carefully drill into the heatsink so the heat break tube sits higher. It seems to be OK leaving just a tiny gap between the collar on the block and the heatsink. I also chamfered the hole in the top of the heatsink because the corners were sharp compared to stock.
I got some cheap Chinese brass V6 nozzles with the 3 hole copper inserts. I didn’t like the way the middle of the insert would mostly block the hole in the block so I filed it down and countersunk the 3 holes again.
Then I had problems with it not sealing and filament leaking down the thread and filling up the silicone sock. I filed some more off the thread so the shoulder of the nozzle sat against the block which helped reduce height even more but still leaked slowly. A bit of PTFE tape stopped the leak but isn’t a great solution. I will be trying a copper washer on the nozzle when I get round to it.
In the mean time a 0.6mm nozzle has been printing PLA and PETG at 35mm^3/s. Initially it would do PLA flow tests at 35mm^3/s and 225C but the heater could not maintain 235C and would error out. After filing down the nozzle it seemed better possibly because the nozzle didn’t poke out of the silicone sock as much. I think I did a PLA flow test OK at 230C and I have been printing parts in PETG at 240C, but, for parts the average flow rate would be less than 35mm^3/s.