I think it's imperative to train weapon retention equally to draw and accuracy. So you carry concealed, most of us do. That means nothing in an altercation where your weapon can be exposed. And the other party feels you may use it so they go for your weapon. And or during your altercation you end up on the ground, your weapon happens to fall out of the holster. Weapon retention in my opinion is something I will always continue to practice to hopefully render the results of my survival in my favor.