V-brakes can require more frequent adjustment than cantilevers. I run V-brakes on my Birdy folder, and when releasing tension on them to fix a flat, or otherwise remove a wheel, once I put the wheel back on and reconnect the brake, the pads are often no longer spaced properly. I then have to readjust the springs to get the pad spacing right. If I am not carrying the proper tool to set the tension, I have to flex the springs one way or the other until the spacing is correct. Cantilever brakes are much less fussy.

FWIW, I was once a bike mechanic at a LBS