It's all in there - there's the guy who wants to get to Australia via Hawaii they meet in Happy Landing it's just that Joshua's a natural stepper and Lobsang's interested in exploring the parameters. The bit with the Elves and Joshua getting hurt happened at the point where he was getting fed up with just travelling for travelling's sake (which is more or less what he was doing at a slower pace before he was head-hunted by Lobsang) and wanted to stick around and we already knew he'd stand and fight if there were other factors than just his own hide to save with the situation with the super-boons. Lobsang knew he was in no sustained danger (and being disembodied had lost his sense of endangerment somewhat) and the Mark Twain was also a factor in his fight rather than flight reaction as that's his home base - material 'possessions' you value literally tie you down after all...

