A person may find it necessary to use a cap and ball revolver for concealed carry. The .44 is an ideal caliber, but the Colt Army is too bulky. Here is a suggestion you might try. If like me there is a Bass Pro Shop near you, you can buy a Pietta .44 for $150. Remove the loader, by undoing that one screw. The gun is much less bulky, and points up better. To me, the original gun is muzzle heavy. Then, cut 2 1/2 inches off the muzzle. This will give you the same length as the classic model 73 Colt .45, and be less bulky than the original Colt Army.
Cabelas sells a .44 with a 3 inch barrel, for $150. This seems a little short, I think you might lose power with that. Also, for me Cabelas is mail order. You need to be able to hold and try the particular gun, I know Pietta quality is erratic, but when they are good they are very good.
As for a front sight, like the loader, it will just snag clothing. You ain't gonna need it for this type work.