Other updates were successfully applied using this method (as directed by HP support, Level 1 & Level 2) - so it only stood to reason this would work as well.
There are many functions only available via SSH to ESXi console (HP Array configuration) - more often than not going on site to boot to an HP SPP DVD is not feasible (yes, I understand that one COULD virtually mount an ISO as the boot media and remote in via iLO, Advanced)