Summary: The Passport Sling is a great way to lug around an SLR so it doesn't look obvious you're carrying expensive gear.
Pros: Compact and light enough to carry around a decent amount of gear, Looks like a regular cross-body bag, Interior pockets with a padded interior camera box, Can fit an SLR body with attached lens and extra accessories
Cons: Exterior pockets aren't sealed, Base isn't protected without camera box
Excerpt: The Lowepro Passport Sling is an extremely simple bag, but don't let that put you off because it's also very well designed. Being a sling means you can wear it in a number of ways, including across your back, chest, under the arm or down by the hip. There are also a few pockets inside and out for carrying personal belongings and a handy water bottle pocket.