What were some of the obvious downsides you were expecting, and why didn't it show up? I suspect one dimension is if you're limited to readonly, SQL as API is

What were some of the obvious downsides you were expecting, and why didn't it show up? I suspect one dimension is if you're limited to readonly, SQL as API is pretty good. Have you ventured to looking at datalog or Datomic? If so, what do you think?