Stuff & go means exactly as it sounds. It refers to the need to occasionally be able to quickly & easily grab a gun, stuff it in your pants and go. This need can arise at anytime in any clothing you might be wearing at the time. I can't count how many times I've needed to do this to: take the dog out, run to the grocery store for creamer so my wife can enjoy a cup of coffee, grab Waffle House to bring home for breakfast (like this morning), or going out to eat after working out at the gym. At these times I'm not in my typical work week clothing which dictates belted pants and a tucked in shirt, but in a t-shirt and shorts or sweatpants. Although, for me it's not an everyday carry method it is a definite need if I want to be armed at all times.
Some of you are going to ask, "Why not pocket carry?". The simple answer is that in order to pocket carry you must first have a pocket. The beauty of S&G is that all you need (clothing-wise) is a waistband and some kind of shirt which if you're going out in public you're most likely going to have. This, of course, doesn't take into account dresses (which my wife is glad I don't wear).
The requirements for a firearm to be a S&G gun may vary from person to person based on hand size, recoil sensitivity, body type and caliber preference. The fundamental characteristics will typically be small size & light weight to maximize comfort & concealment ability. The guns I am going to use in this comparison I've found to meet all of these requirements (after a little tweaking). The semi-auto is a Kahr PM9. The PM9 is uniquely suited for concealed carry because of it's amazing measurements and weight for a subcompact 9mm with 6+1 capacity. The revolver is a Charter Arms Undercover .38 special in double action only (DAO). This Undercover isn't the lightest offering by CA, but the extra ounces translate into less recoil & better control when shooting +P ammo.
Here's a direct comparison by the numbers:
-----------------Kahr PM9------Charter Arms Undercover .38
Length-------------5.6"---------------------6.31"
Height-------------4.3"---------------------4.5"
Width--------------1.1"--------------------1.25"
Carry Weight-----20.8 oz-----------------19.2 oz
Caliber------------9mm------------------.38 spl +P
Capacity-----------6+1----------------------5
Note: Carry weight takes into account everything needed to carry the gun in S&G condition. That means loaded with whatever carry grips or holster needed.
As you can see the semi's smaller in every dimension, but the revolver's lighter and in true revolver fashion because of it's rounded shape the extra tenths of an inch don't inhibit it's concealability. Neither of these guns comes out of the box ready for S&G carry since on the standard gun there's nothing to keep it from sliding down the waistband. Here's how I solved that problem and also what I added to aid in shooting comfort.
The Revolver
The Semi Automatic
As you can see concealment with either is great. The semi does have more grip to hide with the finger extension. On the draw the semi wins out because it's grip is more accessible and the kydex holster gives it a smooth release. The revolver has the disadvantage dealing with the width of the cylinder. In comfort the revolver bests the semi because there's less of it at the muzzle end, but the semi doesn't cause any pain. It is just more noticeable. The semi has the capacity advantage (7 vs. 5). The revolver has the weight advantage being 1.6 ounces lighter. In shooting they are both natural pointers. The semi gives better accuracy at distance though the revolver isn't too shabby. Of course, the revolver has less chance of jamming.
Each has it's pluses and minuses, but both can do the job of Stuff & Go and do it very well.