Thunderwear review
I've had one for about 5 months now. I am 5'8" and 180 pounds. I carry a s&w 442 in it.
Drawbacks:
- slow draw
- both hands required to draw
- the butt of the gun will print if your pants fit tight (properly fitted 501's for example)
Advantages:
- ability to conceal a handgun wearing just jeans and a T-shirt (tucked or not)
- ability to conceal a handgun wearing just jeans!
- ability to conceal a handgun wearing nothing but swimming trunks!!
- will NOT print when wearing properly fitted "loose" type pants (levi's 550 or dockers, or 5.11 pants for example)
I have no problem using the "facilities" while wearing this,
even a urinal! The elasticity of the strap allows you to just push the "pouch part of the holster up and to the side.
Sitting down and/or driving are not a problem.
I think the size of the handgun will dictate how well you like this holster. My J-frame loves it. I've seen the web ad about using it with a 1911 and have my doubts to about that being practical.
I would not hesitate to buy another one.

Good luck.