Multiple Search results Themer layouts

Hi Beavers,

We are creating two different archives on our website: a blog and a guide (somehow like a knowledge base).

So there will be posts of 2 different (main) categories on our website and both will have a slightly different look and feel. So both will also have separate overview pages.

Users shall be able to search within these categories separately.
I achieved this with a plugin (Ivory Search).

Now I would also like to create two designs for the search results.

If I set up a themer layout for these results I can only select search results and get the info The layout XXX is assigned to the same location and may not show.. Is there a way to assign two or more separate search result layouts - depending on the category (in my case blog vs. guide)?

Thanks a lot in advance!