BJJ Scout brings another awesome breakdown divided by weight class about the sit-up guard/sweep position:
I use it consistently, especially in my matches since I returned to competing after ACL surgery.
My favorite use of the position is the Kurt Osiander DLR sweep from a sit-up guard position where you feed the lapel.
Last match of the day: I hit it at about 25 seconds into this match. .
Kurt Osiander breaks it down as simple as can be. This is one of my all-time favorite sweeps.