I saw the beautiful aluminum nexus yesterday in the flesh after delivering evaluation set , and my goodness it was pretty! Now I don't know whether I want black or aluminium myself.
Regarding the bootloader unlock warranty thing with QFuse, reading from devs at top comment on the reddit thread, there's appears to be confusion over whether the evaluation phone by Vulpix was properly secured in factory "qfuse disabled usually means the device did not have it's proper secure boot fuses set at factoy" and may not have anything to do with bootloader unlocks. As I mentioned before, I suspect that all the evaluation set given to reviewer are still not really production units with properly configured bootloader and firmware so I think we might be barking up the wrong tree here.
For the technical stuff I may be talking outta my ass here so here's my point : the world looking at this thread and can we not paiseh ourselves and let the people at XDA settle all this? For further discussion on bootloader unlock and QFuse why not go over at XDA instead.