It will, because it has been placed inside the system partition. But you could make it a habit to flash the flashable zip right after flashing a new ROM to retain itStill getting used to the Xperia ecosystem. When I put this on my tablet, won't any rom I flash over write it anyway since roms have the recovery with them in most cases?
Some custom ROM's do have recovery included... but most will have just one. It's a preference though, so it's up to you