I have long been a fan of the J frame. They definitely have some drawbacks, as they are not easy to shoot well, sights are abysmal, and slow to reload.
With that said, they are very easy to carry and conceal. Every day at work I run one in the front pocket of my non dominant (left)side. One reason for this is if I am struggling to maintain control of my primary handgun, I can deploy the J frame from the off side and end the weapon retention struggle with a close quarters shot.
I "semi-jokingly" call it my ear nose throat gun, because those are the places I will try to stick it into prior to pulling the trigger.
I have practiced this (dry firing) while doing ground fighting and grappling, and I have found this method easier to retrieve the J frame than other methods such as attached to a ballistic vest.
Another reason for the off side carry is that when an unknown threat/threats approach me and I do not know their intent, I can slide my left hand into my pocket, and acquire a full firing grip. I keep my hand in my pocket until I determine that they are not a threat.
This not only gives an element of surprise, but prevents people from freaking out, versus having a full firing grip on my duty gun that is visible.
More often than not, the person approaching is not fully committed to an attack and does not require a gun being pointed at them, after receiving verbal commands, and being informed of consequences of further actions.
For these reasons, I really like the J frame and will continue to carry one as my second gun that is carried off side.
CHEERS
Exactly what I did in patrol. My J-frame rode in a pocket holster on my weak side, for the same reasons you mentioned. Your primary hand must be able to protect and retain your weapon; the weak hand (now called "support hand") had immediate access to the back-up gun.
I carried my little gun in a Mika holster, which was sold at the academy store. There are versions for front and rear pocket. They mask the gun's outline and keep it from moving around in your pocket.
Bob
Mika holster for the front pocket is on the left