Finally, to Mike Balko.
I'm more then willing to play with weapons or spar under any rules within reason. I'll allow eye gouges, pinches, biting, safe weapons (no reason to use a boken when kendo people have developed perfectly good tools for us to use). In fact I have done this for time to time to prove a point. The simple fact is most bjj guys do not train to deal with this because they simply do not care about it. The techniques are there, I've seen Carlson Gracie Jr. show standing wrist locks and other traditional defenses. Your post shows how limited your understanding of bjj is. You think its all double leg takedowns and chokes. Our bjj club knows many good judo throws. Beyond that many proper techniques are designed to protect your eyes and throat from attacks. We just don't talk about it because we simply do not care. That's why the mount is so important, you can hit them, then can not create any leverage to hit you. Can they go for the groin? Sure but they take a much greater risk, namely staying conscious long enough to attack the groin while they get blows rained down smashing their head between the ground and a fist/elbow/forearm/palm. It seems to me a proper defense to protect your head then escape would be a much better idea. I like my skull in once piece.
The words play, safe, and weapons don't fit together, this is why katate dori is practiced empty handed so much, traditional aikido is not competitive and so misunderstood.There is a big difference between someone not caring about something and being completely vulnerable to it because they think it is impossible for ANYONE to realistically defend against it.
So you were taught you can't hit someone from the guard?I just saw George St. Pierre, (UFC champion in his weight category) on a T.V show about MMA, training with David Loiseau at Tri star gym where he said the exact opposite. He then said he prefered being in the guard due to the increased submission oportunities. In a standing clinch, (which is needed to execute a judo throw in a no rules setting) and when you are sitting on someone ground and pound style the groin and eye strikes won't help you, because you are dead.. even if you are the one who ends up on top bashing away or you get a sub from the guard,you are dead if you are training to defend yourself against someone who might be armed or have back up.Ever notice how vulnerable mma fighters are to Big John Mcarthy when he decides the fight is over?