Floor leveler over Hardibacker??

Need to level the floor prior to laying tile. Was going to use Henry's or Ardex self leveling floor leveler. Will this bond to the Hardibacker or will a primer need to be used. What I have read says to prime over concrete, but does not specify if needed over hardibacker or any other mortar based underlayment.
Thanks JRE
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.