In my opinion, if you are getting denied for a state CHP, you are very unlikely to qualify for a Omaha Open Carry Permit.
Also, I would store the loaded mag in a different spot than in the same container that you store the handgun. Put the mag in the glove box or something. Or just leave the mag in the gun and put it out in the open on the seat next to you, perfectly legal(assuming you register it with OPD...).
From here:
http://library.municode.com/index.aspx?clientId=10945Sec. 20-207. - Firearm training program.
(a)
A training program to qualify persons in the safe use of firearms shall, after review and approval by resolution by the city council, be established and operated by the city, which may contract with private organizations or use the services of other agencies, or may use a combination of the two, to provide such training. Said resolution shall be submitted to the city council on or before December 21, 1993.
(b)
A fee shall be charged each person attending the training program. The city shall set out a reasonable fee, to be set by the city council, after review and approval by said resolution, which shall include the cost of training, to be paid to the licensed training facility, and to the city.
(c)
An identification card on a form approved by the city shall be issued to each person who successfully completes the training program.
(d)
The training program shall consist of eight to ten hours of classroom training and education and two hours of practical firearm operation at an approved shooting range.
(e)
The city shall prescribe such procedures as may be necessary for its operation in conformity with the provisions of this article.
(f)
The city shall have complete control over the training program and shall decide upon the qualifications of all applicants.
(g)
An applicant for the training program shall fill out a form stating his or her full name, social security number (optional), residence, age, whether applicant has ever been convicted of a felony, whether the person is addicted to the use of alcohol or any controlled substance, whether the person has any history of mental illness, and
whether the person has ever been convicted of a misdemeanor involving acts of violence. (h)
The identification card shall be valid for three years from the date of issuance.
(i)
The identification card may be renewed every three years provided that:
(1)
The applicant pays a reasonable recertification fee, as set by the city council.
(2)
The applicant has not violated, or is currently charged with violating, any applicable provision of this Code, state law or city ordinance, rule or regulation during the past three years.
(j)
The identification card may be revoked by the city for the violation of any applicable provision of this Code, state law or city ordinance, rule or regulation, or if the identification card was issued to an unqualified applicant.
(k)
Waivers may granted to those who can provide evidence of satisfactory completion of either a United States armed forces or a nationally recognized handgun firearms training program.
(Ord. No. 33113, § 8, 11-23-93; Ord. No. 34229, § 2, 6-17-97)