Yeah, that was kinda my point. I wouldn't bother with a Small Clone, which is a 'nice' sounding chorus pedal.
You might be able to get creative pairing a flanger or vibrato pedal (or both) into a short (almost slap-back) delay and minimal repeats?
The delay and feedback controls are where a lot of those weird/unhinged/magic Polychorus sounds reside.
This guy does a good job deconstructing things, you might be able to use his examples as reference tones: PolyChorus: The Sound Of In Utero