Displacements

[Tango]

Displacements we all used them. I don't like them really, and try to avoid them at all costs, but since my maps are being to mature I need to incorporate them and be able to work with them. And now onto my question
Is it okay for displacements to partly be intertwined with brush? like in the image below? I don't know why but it feels really unusual to do something like this.

 

[[Rx.] Christian Troy]

I've done it with no technical problems on some maps I've worked on. On some other maps it did cause bad visual effects such as bad shadows that couldn't be fixed or it would darken the displacement or brush or both.