There is this:
From the Oklahoma Statutes, Title 21. Crimes and Punishments, Chapter 53 - Manufacture, Sale, and Wearing of Weapons, Oklahoma Self-Defense Act, Section 1290.26 - Concealed Weapons-Licenses from Other States Valid,
http://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=69809:
quote:
RECIPROCAL AGREEMENT AUTHORITY
The State of Oklahoma hereby recognizes any valid concealed carry weapons permit or license issued by another state.
Any person entering this state in possession of a firearm authorized for concealed carry upon the authority and license of another state is authorized to continue to carry a concealed firearm and license in this state; provided the license from the other state remains valid. The firearm must be carried fully concealed from detection and view, and upon coming in contact with any peace officer of this state, the person must disclose the fact that he or she is in possession of a concealed firearm pursuant to a valid concealed carry weapons permit or license issued in another state. Any person who is twenty-one (21) years of age or older having a valid firearm license from another state may apply for a concealed handgun license in this state immediately upon establishing a residence in this state.
Thus, there is cause to believe that they may recognize it. But note that it speaks of "Any person entering this state in possession of a firearm authorized for concealed carry upon the authority and license of another state". Does that mean "for as long as you stay if you establish your residence in the state"? Or does it indicate someone in the state temporarily?
I'd certainly ask an attorney in Oklahoma to be sure.
Note that you can apply for an Oklahoma CHL immediately upon establishing residency.