I've used both drives before.
And I can tell you that the 7200rpm drive feels slightly faster than the SSHD during loading.
However this may be my own subjective opinion.
Once loaded the SSHD feels slightly more responsive especially if you're loading applications that are commonly used.
The commonly used files will be stored in the solid state cache portion for faster reading.
SSHD also generates less heat and is quieter than the 7200rpm drive because it spins at a slower rate.
If you're always on the go using the SSHD means you can eke out a bit more battery life per charge.

On the theory side, SSD capability to retain data will wear out but the conventional HD will last forever. Remember when the SSD first came out? They were struggling to set algorithm on how to make SSD use all the memory locations randomly not just frequent on erased location. This because the locations that are frequently used will wear out and cannot retain data or become unreliable.