It is a serious oversight that Byron does not already have L3 commit access. I'm fairly sure that those on CC will vouch.
Adding Byron: email@example.com is the relevant email (I think).
I vouch for Byron Campen.
Obviously, I vouch for Byron.
And for good measure I will vouch as well as module owner for the area he works in
Power up! scm_level_3+ bit set.