1) You tell us, it's your phone! 🙂
2) In this day and age, there's no reason why it matters. Historically bootloader version determined unlockability, but the only unlocking tool you would want to use now, BootNeuter (through PWNAGE), will tell you your bootloader, let you easily unlock both bootloaders, and let you change your bootloader (if you really want to)!
Enjoy
Doobs