Having a concealed handgun permit from a another state in addition to the one that you live in can be a very good idea if that state’s permit offers reciprocity that your own state’s permit does not offer. This is especially true if you live in a state with no training requirement which often means that your permit will not be recognized by states that have a training requirement.
I recently came across a site, Blackstone Gun Safety, that offers online Handgun Safety Courses that fulfill the training requirement for the Oregon CHL and Arizona CWL. This allows you to fulfill the training requirement for these licenses from the comfort of your own home. The Arizona CWL in particular is widely recognized by many states.
Check out BlackstoneGunSafety.com.