Good question. I consider it both.
It's high maintenance in that the daily upkeep, prepping the "tools" of the trade, etc. requires time and preparation. But it is also low maintenance in that there is no having to style anything after you get out of the shower, towel dry, splash on some aftershave lotion and go. And throughout the day, nothing will affect the look of your head, wind, rain, sun, whatever, it's still gonna look the same. With hair, the environment can cause havoc to you're styled hair, making it go from looking good to looking a mess.