A friend of a friend once asked what the point of fixed or SS was. I said the real question was what the point of gears. Asides from the weight, it sounds like a 2-speed kickback has most of benefits of SS, but with an extra gear. IMO once you start faffing about with more than that, you may as well, just have a +3speed hub or +5speed derailleur.
I think that starts to get too complicated.
A friend of a friend once asked what the point of fixed or SS was. I said the real question was what the point of gears. Asides from the weight, it sounds like a 2-speed kickback has most of benefits of SS, but with an extra gear. IMO once you start faffing about with more than that, you may as well, just have a +3speed hub or +5speed derailleur.