Can Unofficial Groups use the Pledged feature?

Can Unofficial Groups use the Pledged feature?

Couldn't find this question elsewhere so decided to ask — if it is posted somewhere, I apologize! I just think it would be beneficial for seeing where characters claim themselves IC as Unofficial Groups are, well, unofficial so no rosters or anything for them.

I will understand if not though seeing as ooc/policy wise, unofficial groups aren't technically on the path for packs yet and most pledges seem to be green-lit pack ideas.

Thanks for any answers!