I've always been taught never to go to the ground in a street confrontation for obvious reasons. That's why aikido techniques always have both feet rooted to the ground unlike judo. Also you will have to think about the laundry bills, it's more economical to stay standing
Reminds me of my first Aikido teacher. His response to how to deal with a grappler was, "Don't go to the ground! Easy!" Good luck with that strategy...