I own a pair of NB MT00's, and I like them. Quite a bit. But they are extremely light, almost an exercise in how minimal an upper can be. I don't believe they would hold up to extensive rough terrain hiking, and would not protect for long against serious abrasion. They're just too lightly built. They would work for a while but wear out quickly.
Occasional day hikes, trail runs and the like, yeah. I like them. But I would suggest the MT110 or maybe a Brooks Pure Grit for regular trail duty. Both are, I believe, 4mm drop and plenty light...but quite different from each other. REI does or did carry both.
The Vivo Neo Trail is a nice shoe. But it's not very breathable and dries very slowly. The low ankle height means anything deeper than a minor puddle gets you wet feet and the fabric doesn't dry well. I like mine, very comfortable and well made, but imperfect for wet terrain hikes.
Meanwhile the newer, lighter, cheaper Breatho Trail breathes and dries much better, but I don't like the tongue design. Specifically, the tongue is an integrated part of the upper (not a separate part) which forces it to "bunch" under the laces a bit across the top of my foot. That could be peculiar to me but it is an issue.