t/Space approach seems great - much better than current CEVs. However,
it appears that if both were to go ahead, the only advantage would be
the benefit of not man rating the CEVs.

There would be benefits if there was a low orbit space shed to be used
for mission assembley, but the thinking towards a HLV means that's not
needed. Perhaps for a Biglow hotel?

Ideally, ESA should buy the concept, but it's not invented in France.

Have you by any chance come across the vehicle performance and stage
mass figures? If this isdeveloped, it could be a compettive way of
launching small payloads to LEO.