Any complexity introduced in the code increases its long term maintenance cost. I strongly suspect this is one of those cases where the performance gain will not justify the long-term effort of maintaining a more complex architecture.

I remember having a similar discussion circa 1992 about advantages and disadvantages of using ODBC versus native MS SQL/Sybase libraries. I instrumented the program I was writing and showed it spent 99+% of the time idling, 1-% of the time computing and, of that time, about 78% waiting for the database to return something. Using native libraries would yield a minuscule improvement at the cost of a huge headache.