A school that I am considering does a lot of different styles and I wanted to get people's opinions of pros and cons. They do a lot of Japanese Ju Jitsu, Brazilian Jiu Jitsu techniques without rolling however, Kali stick/knife fighting, Judo, and self defense stuff that looks like Krav Maga. But the only issue is that they don't do any sparring at all, and you wear a judo GI at all times. My goal is self defense but I without sparring I wasn't sure if I would be better off with a boxing/Muay Thai school. So my question to you would it be effective without a resisting opponent?