The "single leg" used in SC is quite different from the one used in wrestling. Because the jacket, you can pull. When your opponent resists, you can borrow his resistence, change your pull into push, and take him down. If the timng is perfect, it's almost an effortless throw.
http://www.youtube.com/watch?v=q2lfi...ature=youtu.be
Since you only use one hand to get your opponent's leg, you can use the other hand to control his upper body. This way, your opponent will have less chance to hit your head. If you can replace jacket pull with "arm drag", it can also applied into no-jacket environment quite well.
http://www.youtube.com/watch?v=djJnL...ature=youtu.be
It seems to me that this kind of single leg will be safer to be used in UFC. What's your opinion on this?