Left column is the HellColumn3 with the original displacement solution Right column is the HellColumn3 with a single displacement map.

I made the map by dropping the major8 displacement map into the green channel of an empty Photoshop file and copying the minor8 displacement map into the red channel. 
Saved as TIFF, with only red and green channel enabled.

I stripped out everything except the displacement entry. Rendered in Front view.

I don't see a difference.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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