I know that it is really a matter of what and how much you carry, but I am torn over the overall dimensions of Ortlieb panniers. Are the Sport packer plus panniers big enough for a daily commute? I only want to carry one on most days. I am concerned that the Bike Packer is too large overall for a daily commute.

Also, are the pairs of Ortliebs right/left specific or can you switch them from side to side?

Anyone have thoughts?