As you are probably aware, CT Grips come in two flavors. With and with out a switch. I have a set of the switched ones on a 340pd. I purposely forget they are there. And practice shooting it with out the laser switched on. Most situations where you would need to draw a weapon and fire, you wouldn't have the time or inclination to think of turning on a switch. However, there may also be times when you might have the time and or the inclination to turn the switch on. For me it's there, just in case.
The grips are larger and more comfortable to shoot with, than the standard small grips. But being larger, they take away some of the choices you might otherwise have in try to conceal the weapon. The J frame snubbie, with standard grips fits in a front pants or shorts pocket better without the CT grips. I carry mine in one of two ways. Either in a Milt Sparks pocket holster, in a vest or jacket. Or in a Milt Sparks VM2, at 4 or 5 o'clock.
The CT Grip without the switch, I have no experience with. But with this model you can't turn off the laser. So in some situations you may be indentifying or giving away your position.
I do practice at times with the laser turned on, as well. But most of the time its off.
I am not an expert in anything, much less gun stuff. These comments are an opinion only and what I have become comfortable with as far as my 340pd is concerned. Any comments on my opinions are welcome. And I am not above changing my strategies when some new and or better ideas come along. For your consideration.