One thing that never yet got questioned was weight. Well recalling taking my Vita around (when I gave a shit about it), even my 3ds Xl (new and old JP one, latter is heavier).
I wonder if the Switch would 1. Need a satchel, 2. be too heavy. This can only be answered by the “advanced copy” people, me I am at the seat of my pants. On personal cost, not going to happen.
Maybe they will do the Van/Truck thing like with the Wii U, but I doubt they’d trust me to put it in my pocket, or anyone. But the Vita and even to a lesser extent XL 3ds and new 3ds can weigh a pocket down a bit.
So the big question is, “is it really portable?” I would seriously doubt it is more portable than a Wii U, in the sense that you bag and satchel everything.
Granted the games will be a chip sized cart so that part is much more portable. Or as portable as a Vita or 3ds Game.