Po Campo bungee handbag final review: Negative
Sadly, I must tell you that I cannot recommend this bike bag for serious, regular use. I'm not going to count on it to hold up to a daily all-weather commute (or whatever) of moderate to long length. Basically, if you ride your bike because of lousy public transit options, then you're probably going to want something more robust. (But if you're the sort of person who can and will take your bike for a bus ride when it rains, then you'll probably be just fine.)
So first, the sleek little bungee clip broke exactly when I most feared it would: on top of a pothole in a construction zone in the middle of a busy intersection during PM rushhour downtown in crummy weather. I don't know how, I don't know why, but it's broken and I can't fix it. Well, that's what knots are for. At least I was walking when it broke. Why does shit always happen to me while I'm walking?
Second, having neglected to conduct a shower test earlier, I had to find out the hard way that, despite being made of vinyl, the bag itself is not waterproof. Granted, we've been getting an unholy amount of rain all night (and all day, and all last night), and it's probably my own fault that I got stuck in it for about 8 miles. But you know, as a dedicated cyclist, sometimes you're going to get stuck in an unholy amount of rain, and you want to know you can count on your stuff staying reasonably dry when that happens. And "reasonably" should at least mean that you don't have to lay the cash in your wallet out to dry overnight.
In conclusion, it looks pretty, but it's no more durable or waterproof than any other ladies' purse. I'm going to save up for some Ortlieb panniers now.