Fast & loud - Crimson Trace CTC Laserguard Taurus Tcp LG-407

We both have the Taurus 380 hand guns with crimson trace laser sights on them. It is amazing how fast you can draw and shoot without hunting for the open sights. With bifocals, that can be a real challenge. When we let a friend at the range try their luck with the crimson trace laser, they just love it. I have a 357 magnum Ruger Blackhawk with a scope on it. I wonder if I could put one of these right on the gun with the scope still on it? This could be very interesting.