Yes, it is legal to use Bitcoins in the Philippines. If anything, the BSP ruling is a step that allows everyone to engage in bitcoin without fear of being classified as someone who doesn’t use traditional currency (AKA the Peso). It is a step towards acceptance. Also, it is a way of telling us that we can deal with bitcoins if we want.
I don't know, but in this forum there are a lot of Filipino people who become prize hunters, of course if I have to appreciate it in the legal Philippines. hopefully other Asian countries will follow.