(b) This section shall not, however, prevent an owner or other
contractor from providing all insurance policies or surety bonds
required by such contract without reimbursement from the contractor or
subcontractor. Nor shall it preclude such owner or contractor from
requiring that the contractor or subcontractor provide a credit in his
bid which reflects the amount the bidding contractor or subcontractor
would otherwise add if he provided his own insurance as required in the
bid specifications. This section shall not deny an owner or contractor
the right to approve the form, sufficiency, or manner of execution, of
any insurance policies or surety bonds furnished by the insurance
company selected by the bidder.