There is almost always conflict between the marketing of self-defense oriented training and the actual delivery of realistic, effective training. More often than not, our industry overpromises- and then delivers watered-down, useless ‘training’ that, in reality, does nothing more than give the participants a false sense of security.
Simply stated, effective training should provide you with knowledge that you can apply and skills that you can repeat. That skill should typically be measured. For skills that we expect to need to perform under extreme duress, those skills need to be durable and reflexive.