If I'm not mistaken, a memorandum for record must be provided to HRC that authorizes the wear of the unit SSI.
I have 3 from my time from 1st Bn, 3rd Group. Also have a few others. I also have each in my OMPF to cover my wear of it with my DA Photo.
We have had individual augmented personnel that are authorized the wear of the unit patch. Additionally, the reg states somewhere (from what I remember) that if a company or above is attached to (TACON, OPCON) another unit, they will wear their unit patch as the SSI.
I don't agree with it just being handed out. But if you supported the CJSOTF, SOTF on down to ODA, then you deserve to wear it. SSI is a unit level appointed uniform item the same as those worn on the wearer's right. But each Soldier is responsible for their own ERB, OMPF and Photo. Wear what you want, you never know who is reviewing your file.
I've seen more people this last trip wearing the Regiment's patch and that damn Commando patch. Our Commando ODA didn't wear them because they couldn't get them.......because everyone else was apparently a commando. I'm not sure if it was the same for you VG, but everyone wanted to be part of the commando brigade.
I'll look through the regs again, but what I have up top was a board question for one of my Soldiers, and we both spent time researching it to make sure since we didn't know. I know, bad SFC, bad!