That Commuter Panner looks nice and 150 bucks is really not much these days. At least that's cheaper than a nice purse. I personally used a back pack for years when commuting. There was no way I was going to put panners on my Liotto road bike. I found that keeping all the stuff in my pack low and at the bottom made it more comfortable. For me it had to be big enough for a pair of shoes and a light change of cloths. I would get to work early and do a spit bath at the sink then change. As long as I kept the packs load low and close to my waist it really did not effect my balance and proprioception.