Panniers.

I can't understand these problems with taking panniers off - but maybe it's the panniers. Mine are simple Altura ones with what I thought was pretty much a standard Rixen & Kaul fixing system - press large button and pull to remove, or simply slide hooks onto rail to fit - either action takes literally two seconds, less than unshouldering a rucksack carried on two shoulders and only the same as unshouldering a single shouldered bag.

Predictable weight balance, no discomfort, greater capacity - panniers make sense.

Richard