Does VIPRION support 2 clusters in the same chassis

Though a 3rd or 4th blade would automatically be added to the 1st cluster, can I establish a 2nd cluster and maintain 2x2? The use case is supporting dual versioning in production for greenfield on v11 and legacy on v10. There is already HA to a 2nd chassis, so HA would also be 2x2--2x2. Assume there is a valid business reason to not upgrade the chassis from v10 to v11 due to a limited maintenance window.