Never did cross-guard yet, but i like that first sweep.
Sometimes i end up in that position by happenstance often enough, with a feeling that i should be able to do something from here. Of course not having seen the sweep, i just get passed.
Ill keep that sweep in mind for next time.
I sometimes land in the cross guard when someone tries to use the double underhook guard pass on me, and to prevent them from passing, I reach under one of their arms and bring it over my leg, while throwing my other leg over their head. It is a really common position for me to be in because that is my bread and butter counter to the double underhook pass, and people try that pass all the time. From there, I would mainly try for the omoplata or triangle, but now I think with some work on it, I can get these sweeps to work.