Security no problem except one, which I had not thought about before choosing it to take---my brown day sporran has one of those nail closures and only once in the four times I had to go through security (yes four times, two each way as I had to change airlines both ways at Heathrow) one security guy wanted to make sure it was not any kind of weapon.

Otherwise it cleared through the xray machines without needing to be opened at all. Remember no kilt pins or sgians in carry on or YMMV.

jeff