When you run around town with a lot of technology, a good bag isnt just nice to have — its a necessity. In any one given day at Engadget, we might be attending a product launch, interviewing people or taking all those lovely sample shots you see around the site. A regular courier bag or rucksack will likely do the job, but do you really want all your work-essential kit rattling around in a cross-city spin cycle? No, us neither.