Re spider guard on the street

Two main problems that I see:

1) generally need sleeve control - hard to play this with no gi. Attacker may be wearing t shirt for eg. You can use wrist control but extending leg in his bicep/hip can break your own grip.

2) Exposure of groin to knees/stomps.

Pace KF, FD and others open guard with lots of kicking/offbalancing is best for street IMO. Personally Not too keen on subs from bottom - chance of being slammed/stacked. And as noted always better to play top game but - you may not have that choice............