You said "rear entry" and "pov" in the same post. Are you trying to get us all popped on our work internet filters?
I can't help but think about the two major issues that this design may present- the helmet hits the ground hard and: 1) it splits open as the latches and hinges give up and your head is helmetless for the rest of the tumbling before coming to a complete stop 2) the hinges and latches don't split apart but are misaligned and the responders can't open the helmet and remove it with ease
No thank you. I don't even like the idea of modular helmets. I'll keep a good old, proven full face thank you.