Maybe a dumb question, but I just don't see - from a pure haircutting perspective, how is the scissor approach better than a flowbee? i.e., why not just have regular electric clippers inside the vacuum channel?
that's a perfectly valid answer, but it raises the additional question of why actual cheap haircut shops use scissors and fingers instead of a flowbee-style piece of equipment, too. :-)
Based on the very limited reading I've done about it:
1.) It only really works for certain styles, lengths, and types of hair
2.) Cheap haircut shops are presumably mostly competing with home haircuts so if you start doing 5 minute haircuts with some gadget, your customers may start going "hmm" and go off and buy the gadget to use at home.