Getting older, the distance from eye to front sight vs distance from front sight to target has taken its toll!
Like the Red Dot, the laser places POA in the plane of the target;
unlike the Red Dot, you can co-witness with the iron sights.
It's important to switch shooting styles during sessions. 1) You don't want to ever become life-dependent on a battery; 2) your framing reference is different; 3) your depth-of-field may very well be locked on the target, in full flight-or-fight mode; 4) you can target without the bore being on the same line as the the line-of-sight --- you can duck-and-cover, and still deliver accurate fire. 5) Fired from any sort of rest (car roof, tabletop, piano), fire is uncannily accurate. It goes on.
I find my stance "opens up" a bit, and I have a sight picture closer to waist level, and rising. First shots fired with the iron sightline well below eye level, continuing the shot sequence by deliberately looking well over the sights, but with the sights peripherally available. In other words, I "disengage" from the iron sights while the laser is lit.
Then, mid-mag, the laser goes off. If you practice it that way, and maintain good hits, you've discovered that you've gotten a range-to-target and sight picture nailed, even if the little red dot goes out.
Speed, accuracy, flexibility.
Not a substitute for using iron sights; but a very good accessory, even if only used for "flinch" and "wobble" training.