you definately used to be able to but I found this on their website
April 16th 2008
Please be advised that from Monday 26th of May 2008, Brown Thomas & BT2 Gift Cards will no longer be valid in A|wear stores. This is due to the separation of A|wear from the Brown Thomas Group. If you have any queries on this matter please email customerservices@a-wear.ie and we will respond as soon as possible.