Thanks!
1. We are entering the product testing stage with our cement producing parnters in the next few months, so I'll have a better answer for you then. But from a chemical composition point of view, our product is purer than mined limestone and so should perform better.
2. Biggest bottleneck from our perspective is nailing planning permission to build our plants quickly enough to supply cement producers.
Unfortunately no blog post or anything like that just yet. Website is very light on details for now, we haven't prioritised updating (+ some patent considerations).