I just emailed IDPA. It should definitely be allowed. The whole idea behind IDPA is to "shoot what you carry"... I carry a revolver with a a dot. It shouldn't be confined to semi autos. I have a semi auto race gun and I love it but I also have many revolvers and one is an open gun for ICORE. So USPSA and IDPA need to get with the program because many people carry revos with dots and would love to shoot them in competitions where ICORE is not offered in their area.