Dynamic search options support for multi-search

[NeoElit]

I have a use case where I would like to make use of multi-search with two different search configurations. However I'm afraid if that possible with current class level configuration options for multi-search(through initializer). For search scope it's as simple as creating another method for a model. However, docs doesn't say what to do with multi-search. Does current version has any of this kind of support or any hacks to get this work?