Wouldn't holy grail then be parallel channels for candidate generation;

  euclidean embedding
  hyperbolic embedding
  sparse BM25 / SPLADE lexical search
  optional multi-vector signatures

  ↓ merge & deduplicate candidates

that is pretty much exactly what we do for our company-internal knowledge retrieval:

    embedding search (0.4)
    lexical/keyword search (0.4)
    fuzzy search (0.2)