I have listed what I know of.. please feel free to add more
- Under Shoulder
- Waist (Front)
- Waist (Back)
- Ankle
- Fore arm (Like in the movies)
Which of the above is the most convenient as per your personal experience. Has anyone got a "spring loaded Fore arm gun???"
What i see as major drawback (again feel free to add your points)
Under shoulder:
Need to wear a coat all the time. Not good for Indian Climate (sweaty boys)
On the upside... gives you the james bond feeling.
Waist:
How to tuck your shirt in?? I have seen good holsters where the gun handle is exposed. I think a waist belt inside the shirt is the solution, but how good is that in case of an emergency draw?
Also(most importantly) you need to be fit. with a tight pant this could be the most uncomfy way to carry a gun.
lastly, in case of a safety failure.. your B@#$lls get shot at.. the gun is directly aimed there

Waist (behind):
Similar to front.. pls add more.
Diskaon...