I'm an Aussie and am already travelling in Asia right now. I'm considering the possibility of overlanding through Pakistan.
Now rules for getting visas can change pretty frequently and Pakistan is not the most settled part of the world right now, so I feel like all my reading on the Internet is giving me a mix of different answers when I look for this sort of thing. I didn't turn up anything from a traveller there in 2014 though.
Firstly it's not even clear I can apply for a visa from another country. I'm not going back to Australia to apply (-:
Secondly some sources made it seem that Pakistan doesn't issue visas for people to enter by land anyway, but that could be one of the things that varies by nationality and by year.
I've looked at the Pakistan embassy site in Australia, but it seems aimed purely at people in Australia planning to fly directly to Pakistan and back again.