Wording of law also says (for the under 21 kiddies) "A manner where any portion of the firearm or holster in which the firearm is carried is visible." - ARS
13-3102.B.3.a
We (AzCDL) worked to make sure the restrictions to belt holsters weren't there. The way it reads now, as long as "any portion of the firearm or holster in which the firearm is carried is visible" or a "scabbard or case designed for carrying weapons" is "wholly or partially visible," you're good to go. Bear in mind that as a kid, you're a cop magnet. Also, cops have been condtioned for the last 16 years by court decisions that say "wholly or partially visible" means "obvious under casual observation." It's not like you can flick a switch in their heads and everything is erased.
If you are under 21 our ability to expand Constitutional Carry to 18 years is on your shoulders and how you present yourselves.
If you are under 21 and are carrying, don't act like a dick, dress like Chatsworth Osbourne Jr., pull your pants up, turn the bill of your hat to the front and wear a strong side belt holster only, expect to get hassled by the police and be nice to the cop.
Now, back to carrying a pistol in a sling - it's like volunteering to be a poster child for gun control. It's all about "look at me." It's not how one with skill-at-arms would carry. My 2 cents.
Flame away :dude:
Fred