Is ther a way to make only normal produce per pixel shading

And keep height invisiable  and working only to produce masks.   In a word same as in Designer?

Is there a shader for this?

My materrials gets  super messed  when both height and normal  on.  

When I try to  add user0 and use it as height it's in 0-1  range  while I alredy did lots of  sbsars and pixel processors  working in -1 to 1 .     Can I make custom channel (user0) be that way?