Is it ok to run AwlaysOn non shared disk with different patch levels?

Hi experts,

  I have a non shared disk AlwaysOn like this and I would like to update SQL server 2012 on each instance on different schedules. Is it ok?

ex:

10/5 update SQL server 2012 from SP1 CU8 to SP2 CU2 on server A

10/12 update SQL server 2012 from SP1 CU8 to SP2 CU2  on server B

Server AServer B

primary(DB1)secondary(DB1)

secondary(DB2)primary(DB2)