Yes, the MFLB looks sort of cool, and watching someone use one looks pretty neat.
However, for me the Starry v3 is pretty stealthy, and a pair of extra batteries, gets me through the day.
For ultimately stealth, my Yocan Vane can be hidden in the palm of my hand. The Vane provides about 5-6 sessions at 370ish. As for effectiveness, it does work if it is packed properly, if the unit is clean and not clogged, and if the stars are aligned, it is not as bad as some say. It is not, however, suitable for moderate daily use.