Here's an interesting thought:
The theft of laptops is on the increase and of particular concern the use of laptop specific carrying cases is making the target easier!
Now I'm not an alarmist but....there does seem to be a correlation between 'in the street' laptop robberies and the laptop owners use of a dedicated laptop bag. My advice and one that Solidsoft has endorsed is put it in a rucksack. Theft of a rucksack seems to be much less of an issue than laptop bags. With this in mind I have recently shifted back to my good old rucksack - not as stylish as my leather laptop case but much less of an advertisement of my laptop.