Macbooks can only be used in clamshell mode when connected to power. That requires either connecting a MagSafe connector each time the laptop is put in the stand or installing a separate MagSafe connector permanently.
Stood can be folded and taken anywhere by using the same rubber band that avoids the laptop to fall off due to accidental bumps. Simply unmount it and attach it to your laptop (or to your laptop sleeve). Got a Laptop sleeve? It's thin, so you probably can simply slide it in!