Karl, Glad you liked my post!

RE: locks - my opinion is that if someone really wants your stuff they will get it. you can't really lock your panniers - you could lock them to your bike, but they still can
be opened. So, my take on the whole thing is to use a very lightweight cable with a combo lock (can't lose the key), the kind kids use to lock their lockers at school. This prevents the casual ride-away theft, and is very light. The cable is long enough to go around a tree.

The most important thing is to pay attention to your surroundings. If the place is sketchy, avoid leaving your bike, or leave it somewhere you can see it, or ask someone to watch it for you for a few minutes.

I use a handlebar bag that contains all my really important stuff - wallet, passport, phone, plane tix, camera, notepad with important phone numbers - and it never leaves me EVER. Even if I leave my tent in the middle of the night, it comes with me. I always lock the bike to something at night - tree, picnic table, fence, whatever.

Then, when I leave my bike, I just put it out of my mind. Everything else is only stuff, it can be replaced. Don't ruin your trip worrying about it.

This strategy worked for me riding across the US.

Cheers.
Anna