The top box came with the bike when purchased, not sure where it was from though. I have the monolock bracket from Givi and can fit a bigger top box if required. I am now thinking about the panniers, but only after the crash bars, spotlights, screen, hand guards.....
I saw some Givi panniers on a NC that was delivered to a new NC owner here in East London Today. BTW I did ask the guy to join us on the forum They looked really good with the black canvas and carbon finish. They had watertight zips instead of clips. I really like them more on the X than the OEM honda ones and they are R4000 a pair with brackets. Givi Easylock soft panniers.