I do know people (mostly writers of one sort or another) who mostly travel with just a tablet these days though it’s never clicked for me. I usually travel with a tablet and small Chromebook. The Chrimebook is a flip model but it’s just not good enough as a tablet for me.

If you have a detachable keyboard, a high powered tablet is borderline laptop. It's a decent travel companion, but with macboooks so light these days ... again the tablet is just an unnessary thing. It's an optimization, not a necessity.