It works. I did one with directional fabric. I found I had to change about every other one.
There is a cute heart block that is turned into a D9P that shows how to handle directional fabric.
....I found a Fons and Porter pattern called Flag & Hearts with D9P. It doesn't show clearly but....
In your 9 patch, patches 3 and 7 should be upside down. Here's an example of a directional D9P I just finished.
D9P with directional fabric
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