I've heard this argument and completely disagree. To think a seasoned jiu jitsu practitioner wouldn't be able to defend himself against an untrained assailant just because he trains solely in a gi is ridiculous.
You're gym should have punch defence and other self defence-specific techniques as part of their curriculum regardless of whether you wear a gi or not.
You're gym should have punch defence and other self defence-specific techniques as part of their curriculum regardless of whether you wear a gi or not.