My QS has the following:
-CF-adaptor with small card containing the boot.img and an emerceny system
-el cheapo 3112 card (<10Euro))
-RDB-partioned 500GB-SSD-Hybrid drive

Couldn't care less about booting from SATA as that would force me to put a Mac-partition-table on it (to what gain ? there is plenty space in the QS)