Hi. I recently bought a 15" PowerBook and wanted a bag for it that could carry more than the normal sleeve but was still light and small. I settled on the PowerSleeve15 from Booq, and received it today. I must say that I am somewhat disappointed, because it fits the pb very loosely, although it is padded inside. Is there something else that is similar to the PowerSleeve15 but fits more closely so that the laptop doesn't slide around? There seems to be enough extra space in the bag that it might even fit with the 15" pb with another sleeve on it. Does anybody use it this way?