Master Edi, your V1 was great, and I can't wait to see the V2!
I've been watching the Star Wars Global Toy Unboxing event, and they had a 3ft tall Kylo Ren figure where the hood was removable; found some pics of it online
Looks like the back of the helmet arcs up along the brim slightly, and there are for sure no horizontal grooves on the helmet!
... It's interesting to see the slight brim pull up... I wonder if any other toy has that. The 6" black series was different. It did not have that pull up.