[Servant of the Nine]

The question was concealed carry. The answer should be qualified as to weather, body size, style of clothing and body build and activity.
A 1911 under a T-shirt may be covered. It won't be concealed. A service pistol may be a fine choice to fire. It may not be a good choice for a CCW.

I have conceal carried a 45 for years. First a Detonics Combatmaster in the '70s. Later a Para Ordnance P-10. Now usually a Para Ordnance Double Action Ultra Cary. They are all smaller than a Walther PPK or a S&W J frame 5 shot with 2 " barrel and being flat, they are easier to conceal than the Smith.

So9

[Shooter 2.5]

Same here. I just discribed carrying a Ultra-Compact under a t-shirt. As long as the shirt is a heavier cloth and a darker color, there isn't a problem. I can also carry a Commander under those circumstances so it's not the grips that are difficult to hide and it certainly isn't the barrel. The only reason I can see why the amount of people shy away from that type of gun is the weight. After a solid week of carrying, the weight isn't an issue.

[earplug]

I own an original Detonic. I consider it heavy, chunky and hard to carry due to its short barral and weight. The multiple sharp edges don't help. Does your body and dress match the lady in question?
I perfered a light weight Commander over it. I Have carried a Bulldog and still like my Smith. The Charter was a mid 70's gun and it sucked.