The amounts allocated to each account and accumulations on the account may be invested and reinvested in any class of investments which may be authorized in the agreement without regard to any requirements or limitations prescribed by the laws of this state governing the investments of life insurance companies; provided, that to the extent that the company's reserve liability with regard to benefits guaranteed as to amount and duration and funds guaranteed as to principal amount or stated rate of interest is maintained in any separate account, a portion of the assets of the separate account at least equal to the reserve liability shall be invested in accordance with the laws of this state governing the investments of life insurance companies. The investments in the separate account or accounts shall not be taken into account in applying the investment limitations applicable to other investments of the company.