Hrmm ..
I consider WV both ringed in marriage and collared permanent as submissive.
I consider Wlg to be more "velcro" collared as i know in time she may grow and we may grow apart. I can accept that.
I think as has been stated above .. each relationship is different and is all up to the discussions between the two.
Both are very workable if worked out ahead of time. And openly discussed when the need arises from either side.