My point wvenable, is that we are absolutely not dealing with two different kinds of screw drivers here.

Yes they both store "data", but there are types of data that one is well suited to deal with, and alternative types of data that the other one is better for. On my team we've already split out data into two sets, one that lives in ACID RDBMS and one that lives in NoSQL.

If you are dead set in using one solution for everything, my pity for you.