I don't have a combo backpack yet... but that one looks pretty nice. I wonder about the orientation of the camera and gear though, it does not look as stable as others I have seen, most seem to orient the camera and lenses top to bottom not sideways if you know what I mean... I tell you what though, the camera surely won't fall out or get stolen while you are wearing the pack!
I use a Canon photo backpack that fits my camera, flash, three lenses and accessories easily but it does not have a laptop slot. I am still looking for a good travel laptop and new backpack after that... I also have room in my current pack for another body and another lens or two if needed, and I think a netbook would fit fine in it and I am seriously considering buying one of those just for travel and to download, transfer and display photos when needed...