(1) A provision in a will or trust requiring the arbitration of disputes, other than disputes of the validity of all or a part of a will or trust, between or among the beneficiaries and a fiduciary under the will or trust, or any combination of such persons or entities, is enforceable.
(2) Unless otherwise specified in the will or trust, a will or trust provision requiring arbitration shall be presumed to require binding arbitration under s. 44.104. 
