You did not mention what you were thinking about bobbing, or I missed it.
I have a new SP101 that I am thinking about bobbing. It is a dual purpose revolver, Concealed Carry and BUG Match. Advantage of bobbing would mainly be so it has nothing to snag on clothing during the draw. NOTE: I have never had any issues with a hammer snagging clothing in 25 years of concealed carry. Disadvantage the wife might want to shoot it some, and she would probably cock it shooting snakes etc.
Bobbing can have one other Disadvantage. Most holsters with a Thumb Break or Retention Strap are designed to go over the hammer spur. So if you would ever need to have a higher degree of carry security in a holster of this type, you are out of luck with it bobbed. I have several Bianchi 5BHL holsters I keep around mainly for horse riding, hiking, and running around in the woods on my 4-wheeler or Ranger UTV. I carry my 4 inch Model 64 most of the time in the woods, so I would not consider bobbing it.
Just something you might want to consider before making a decision.
I do not remember reading about shooting through a coat pocket. A J Frame that is Pocket Carried in a Coat Pocket might in some unique situations need to be shot while still concealed in a pocket.
A hammer spur could definently be a problem in this situation.
I would come much closer to bobbing a J Frame or SP101, than a K or L Frame revolver.
Bob