Calculation views or HANA CDS views

I have been noticing in several SAP blogs that, CDS views will replace HANA calculation views. In this context, let us say, I have 2 flavors of CDS, native HANA CDS and ABAP CDS. So if my Client does not have ABAP system at all, then Native HANA CDS is going to replace the calculation views? if that is true, what is benefit of having CDS views over calculation views?

My understanding is, the best use case for CDS is, to integrate with in ABAP layer, leveraging ERP security and provide rich semantics with annotations etc. so If I am not using ABAP CDS, am I going to achieve all the benefits with native HANA CDS?

Please share your ideas on this topic?

Thanks
Sreekanth