You could say that it is a substitute of SC ORCs but it doesn't come too simple. For start except for environmental and application reason as non-toxicity, flamability, corrosion or cost the power density per volumetric flow is substantially larger. This can come handy in large devices, but for small applications you won't design reasonably efficient turbine or pump. 

Then, the expansion ends up in superheated vapour so it could be said to be equivalent of SC ORCs with recuperator. But as the critical point is around 31°C (304.25K) in very hot and humid climates make sure that CO2 actually does condense, which might require large parasitic load for heat rejection (cooling tower or fans in air condenser). 

Of course you can have also SC CO2 Brayton cycle but I think that's not application what you're looking for.