Well, not really strange imo. Each state has different laws on CHL, CCH etc and qualificatins. Shooting both makes sense to us since folks can carry either.
Going what’s been told to me: AZ has two separate qualifications. If you qualify with a revolver, that’s what you can carry. If you qualify with a semi-auto, you can either. Nevada has the serial numbers of the guns you are licensed to carry, up to four different ones. New Mexico allows you qualify with any centerfire caliber but you can’t carry a larger caliber than you qualified with. I don’t think Washington has a shooting requirement. Kansas has one handed at 3 yards, freestyle at 7 and 10 yards. Missouri was at 7 yards. YMMV.