Interesting article ... Like FrankZ, my jars are all stored on shelves in the basement and I wipe off the top when I pull a jar down. I always check the top to make sure it's still flat before I open it to make sure the seal is still sealed. I "get" the off-gassing but even with band, I would know.
I think I'll continue to leave the bands on to help with stacking and, most importantly, to make sure I have enough.
Even after I open them and wash them up for storage for the next season, I leave the band on to make sure I have the right number of bands and jars. Funny how they seem to walk out of my basement.