I have carried with the hip-grip, Tyler-T, and Handall Jr. slip-on for years on my S&W 638. Love the hump-back! But I've always wanted a laser on it. I just found out that Lasermax has an inline laser that attaches from the front of the trigger guard and the barrel lug. They have it in red and green. I just ordered the green laser today. I have wanted one for years, but wouldn't give up my hip-grip configuration for one. And now I won't have to!