Metal pipes are alright but not as good as the one i have its perspex with metal mouth piece and cone piece and elbow with stoker.

It cools down the smoke alot more ive noticed.That said you can hang on to a decent metal pipe and it has to get really really hot before you have to hang onto the rubber bits.

My pipe was a gift from a friend when he got me to smoke pipes instead of bongs. I think its a few years old now ill have have to ask him.