Sales or Proof of Concept?

Back from a fantastic two weeks in England. Many thanks to AJ, @PD1, @Goldfish2, @Oliver1982, @stubbo, @CaptainMorgan and @Bertrum for the amazing hospitality afforded to me in Wolverhampton. Packed SO much in such a short time and it was a privilege to meet such warm, down to earth people. I will be back!
The topic of A3D was high on discussions with many A3D holders living in the UK. What is the more important in shareholders' opinions? Sales of SFP or "Proof of Concept" of MFP/LFP?
I think both are important but in terms of a potential substantial re-rating, I believe proving the concept of the MFP/LFP is clearly the biggest catalyst for share price appreciation. Interested in others' thoughts.