Not possible. In the case of borrowing against the value of your home, the lender can opt to take your home if you default on the loan. This cannot be done with
DVC - changing ownership of a contract requires ROFR . . . and thus cannot be guaranteed to a lender as collateral.
DVC contracts can be used in your net worth - as an asset - which could influence loan options like lending rates, etcetera. The more $ value in your assets, the easier you can get good loan terms.