I have one (.357). They are about the same size and weight as a J-frame 5-shot .38. Draw your own conclusions as to which ought to get carried more often (or at all).
To me the American Derringer Model #1 (If I recall the model correctly) is a bigger, beefier version of the old Remington. It does have the advantage of probably a slimmer, flatter profile over the J frame. Other than that, the disadvantages are obvious.
I think they have an old west appeal.
