I agree all safeties do not have to be functional in a singlestack, limited, or open gun. If that is the case then how are pinned grip safeties legal? In IDPA all the safeties must work, In USPSA it is not a requirement. The trigger safety is the primary safety on a Glock and is the one that counts. I Know Troy McManus has posted on here about the Glock trigger safety being the external one and the one that counts.
Not at any match I RO/RM. See 5.1.6:
Servicable and safe is subjective. So do you also not allow 1911's with pinned grip safeties. Its no worse than a Glock with a FP safety removed. Hell most 1911's we compete with don't have a FP safety.
Pat