Theres nothing wrong with that but it's just not as common. Usually its used to jumpstart and rarely to end a cycle.
example:
1-12 test 1-12 test
1-4,6-dbol 10-14 - dbol
On the second one extending dbol two wks past your last test shot is ideal. That means after your last pop of dbol you can start PCT, since you would have to wait 1.5-2wks for the test to clear anyways. This way you have no down time.