Does Keyman keyboard with predictive text work in SAB?

I’m trying to get my head around lexical models in Keyman Developer 12, which allow predictive text, perfect for doing a search. But it’s not clear to me how to tie this into SAB. I see that a package can either contain a model or a keyboard, but not both. Does this require further development on the SAB side before it will work in the app, or should it work already?