If you want the sights, then certainly go with the 317 kit-gun, or the 63 if you're not looking for the weight reduction....agreed. BUT...if you are looking for a point-n-shoot pocket pistol, the sights will get in your way with either one.

I think you can really tell the difference it weight though. A 26 ounce gun will feel much heavier than a 13 ounce gun. I have 38-specials in both SS and air lite and I can really notice the weight difference when I pack either around all day.

I think the question was more in the line of possible durability issues with the aluminum components and from what I know and have learned....durability does not seem to be an issue with the 317.

I would not argue one against the other, but I do not think one needs to be concerned about the aluminum 317 in terms of durability.