Can I convince you to downgrade to being subjectively convinced?

Storing hashes or probes wasn't faster for the use cases I evaluated. I can see reasons why you might like it, for your uses and perhaps "generally", but not in my case at least (small keys where storage bloat was worse than `fnv` recompute, and values which had invalid states which can be used to represent empties)

Edit: I'm re-reading my first response and it reads like "you never need/want the probe length", and I totally retract that position; it wasn't intended.