So. Anybody had a look-see?
I noticed something ... interesting? Intriguing? Cool? On one of the first pages you see a kyber crystal, well, you see three of them. One just glowing, one glowing and with a lightsaber handle-hilt-thingy around it and a third one with rope tied around it, kind of like a handle. The accompanying picture text suggests that the hilt is mostly cosmetic and for protective purposes... implying that you only need the crystal and the force? Albeit with some risk of ... well... you know.
I'm not sure it means much, it's a concept art book, so I guess it's not canon as such, since it didn't appear to be any hiltless lightsabers in the duels in TFA...
Thoughts on the matter?