We actually do use this technique in our search (nearest neighbors on document embeddings). Collaboration is a big part of what we want to do as well, so client

We actually do use this technique in our search (nearest neighbors on document embeddings). Collaboration is a big part of what we want to do as well, so client side encryption gets even hairier. It might be doable, but I think the effort to get that to work properly may not be the best use of time for a small company trying to build a valuable product first :).