I'd take a tremendous hit in productivity if I followed that advice. The amount of time I spend in Vim not customized is negligible, and I can always hit Esc i

I'd take a tremendous hit in productivity if I followed that advice. The amount of time I spend in Vim not customized is negligible, and I can always hit Esc in those cases with a not even in the ballpark time saving over losing snips and all the custom plugins.