Far be it from me to argue with the AG's office but I did find this:
§ 1442. Carrying a concealed deadly weapon; class G felony; class D felony.
A person is guilty of carrying a concealed deadly weapon when the person carries concealed a deadly weapon upon or about the person without a license to do so as provided by § 1441 of this title.
I have to give the standard "I am not a lawyer" statement at this time but it appears to say that you cannot conceal carry in Delaware unless you go through the process of applying through the state of Delaware. If I am wrong please correct me on this.
The link I gave is for § 1441. That's my point. Nowhere in § 1441 does it state you have to have the license issued by the State of Delaware. § 1441 specifically states that CCW permits are accepted from States that have reciprocity with Delaware. Nowhere in § 1441 does it preclude a Delaware resident.
Now, having stated the above, I realize that I could be completely wrong. Having been both a plaintiff and a defendant many times, I have a full understanding that just because a statute says one thing, the AG, any prosecutor and any LEO can interpret it any way they please. That's what the courts are for. Personally, I have no desire to be the test case to challenge anyone's interpretation of § 1441.
I have now been told that "Jennifer" works for a Tony Davalos (spelling?). He is being quoted by someone I know as having the interpretation that a Delaware resident does in fact have to have a Delaware issued CCW permit, even if that person has another State's CCW permit with Delaware reciprocity. I have not spoken to him directly, so I have no idea on what he is basing that opinion.
I know a few judges, so I may go that route, just to get their opinion. However, said opinions may be off the record, so I'll report back what I can.