I suspect that the reason there aren't many (or any) commercial clockless logic designs has more to do with:
1. Lack of availability of design and synthesis tools.
2. Lack of engineers trained and experienced in the use of clockless logic.
3. Lack of multi-sourced, high volume production of clockless logic components.
4. Lack of a clear economic incentive to abandon clocked logic in favor of clockless logic.
I would dearly love to be able to experiment hands-on with a clockless CPU myself, but the cost and difficulty of obtaining just one such device is more than I can justify personally.
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I suspect that the reason there aren't many (or any) commercial clockless logic designs has more to do with:
1. Lack of availability of design and synthesis tools.
2. Lack of engineers trained and experienced in the use of clockless logic.
3. Lack of multi-sourced, high volume production of clockless logic components.
4. Lack of a clear economic incentive to abandon clocked logic in favor of clockless logic.
I would dearly love to be able to experiment hands-on with a clockless CPU myself, but the cost and difficulty of obtaining just one such device is more than I can justify personally.