I don't know how I feel about this. Ultimately I want to be able to possess a firearm in every state the same as I do my own, BUT, I'm also a big fan of states rights.
The commerce clause would be good because it would make it impossible for any individual state to just change their mind about reciprocity. States have already shown that they will do that at the drop of a hat, look at the changes that take place year to year. The "commerce clause" would be a lot harder to change willy-nilly because a change would have to effect all states.