in ireland my mums family used to eat pigs heads (in a soup) up to the 1950's, so doesn't suprise me if people still eat sheeps hearts somewhere, phoggi obviously does for one.. i'd imagine it'd be gristly?

There's no gristle at all. Gristle=cartilage is the tissue (if I understand it correctly) that connects skeletal muscle to bones. It has no blood vessels.
There is a fair bit of fat to be trimmed, and some of the tubes are tough and need to be trimmed off. I like it cut into chunks, skewered, and grilled.

#8.They are available in some curry resturants out here.
#10.Pigs head dishes are quite popular in a number of street hawkers stalls out here,especially the ears,snout and cheeks cut into bite size pieces after being braised until tender in dark soy sauce,five spice powder,whole garlic cloves,star anise,cloves,cinnamon and dried hot red chillies.
Pigs brains are dredged in beaten eggs and flour and pan fried with ginger,saseme seed oil and cracked pepper corn.
Also quite popular in rice porriage and soupy noodles.
and the remaider are mostly ethnic chinese, who quite like pork..
.
shame they clear rainforests for blocks to put their piggerys on
introducing rare exotic jungle virus's to the porcine family, and on to humans

There are also some non Muslim ethnic Indians,native non Muslim tribal Sarawakians,Sabahans and "others" who also love pork apart fro the ethnic Chinese.