dsteding
Contributor
jeraldjcook:If I understand the DIR setup right, your primary is on the long hose, back up on a short hose, so you really have the option to donate whichever one best fits the situation. Right?
No the backup is on a necklace so that it is below your chin and easily located in an emergency. So, you donate your primary, and it is for reasons well explained by Lamont and others.