Okay, glad to see the topic has generated interest. Last year going to the conference had 2 main differences. Firstly, my kilt was in my case so as I could surprise my colleagues travelling with me at the conference. Whilst standing in line at security check I asked what was allowed. I was told that the dummy sgian was fine to wear, but a real one should be packed in the hold. I only had to remove the sporran and dummy sgian through security coming through east midlands airport back home. Kilt pin was still on. Secondly, yes we had the failed attack since then so things probably got tighter. However, I still had the pin on this year, but had to remove the belt. I was offered the chance to go back into the airport and either check the sgian in or post it back to myself. I really couldn't be bothered as I got this one really cheap, but have since priced them at around $24 or 12 - 14 pounds.
I will be flying from Glasgow again in June, but I won't be kilted. No, I was really just saddened that no allowance was made for being a national. Airports - beware of raving looney scotsman trying to stump you to death with their plastic sgians !