I have thought about the 40S&W. I was excited about it at first, but after seeing the ballistics I have just never been able to get myself really excited about it. I think of it kind of like a 45ACP Lite.
Comparing balistics at the muzzle
40S&W - 180gr. Remington UMC / 1015fps / 412ft-lbs
45ACP - 185gr. Remington UMC / 1015fps / 423ft-lbs
The heaviest bullet I see available in the 40S&W is 180gr. That is just the starting wt. for the 45ACP. The 40S&W also has many issues associated with KB's that the 9mm and 45ACP do not have. Some say that this is a result of reloading 40S&W brass that has been fired in pistols with an unsupported sidewall. Some say that it is a result of the bullet being pushed slightly farther down into the case from repeated chamberings of the round prior to firing combined with a unsupported sidewall. These issues give me concerns.
Glock owners claim that the KB issue is solved by buying an aftermarket barrel for their glocks with a chamber that better supports the sidewall.
I do have some interest in the 357Sig (I know that it is based off of the 40S&W) I have always been a fan of the 357 Magnum, and I feel that the 357 Sig (while being a 357Magnum lite) is far more ballistically interesting than the 40S&W.
357Sig - 125gr. Remington UMC / 1350fps / 506ft-lbs
357Mag - 125gr. Remington UMC / 1450fps / 583ft-lbs
I could see myself going for a Ruger SR357 W/Blackened slide.
Machinist,
As to what you said about Flashdance, I understand what you are saying. If you have a firearm concealed correctly, it should not matter if the barrel has been Chromed or is colored Orange. I do my best to conceal my firearm properly, but once or twice my shirt has caught on things and exposed the grip on my SP-101 (Or at least I felt like it did, no one has ever seen it.) I guess that it is more of a comfort thing to me. I do not too much buy the Shiny slide on a deployed weapon putting a purp into line faster. I personally believe that the size of the hole in the end of the barrel is directly proportional to the speed at which a perp will conform. But if bright and shiny is a factor in compliance, I would think that a Laser would do much more for compliance than a shiny slide would.
Charlie