Maybe the security personnel in Europe are that observant but it'd probably be worth the OP's time to make his current bag (which he likes otherwise) look less military and try that. Won't cost much, if any, money to do that unless his bag is coyote or tan. Those are like the new Woodland camo and really stick out from what I've seen. My previous comment was more in regards to just walking around with it than clearing check points. If he likes the bag otherwise I think it's really worth a shot. Notice that my first comment in this thread was recommending an Osprey... then I had a cheaper idea than buying a new bag all together. The problem with the Osprey's imo is their lack of organization. Mine acts more like a suitcase with (very comfortable) backpack features.