To say SB doesn't fit in narrow body bins is way wrong. Especially with UA installing the extended bins in the Airbii (which were my biggest headache) it's fairly rare that it doesn't fit. Most airlines have gone to the extended bins because of the "If you're in group XX we won't have bin space" nightmare we all see. I would say I only turn it sideways one commute leg a month. Worst case, go shake some hands and see if you can stow it up front.