OK - I flipped my trekking bars on the Trek 820 around last night to match the ones posted by Countrydirt and others. I took a brief ride and so far they seem to be OK. I was concerned that having the brake levers so low and close wouldn't feel right, but it's not so extreme as I thought it would be. I may try buying a longer stem to shift everything a little more forward.

Question - how does one measure a stem? Is it center-to-center or what?

EDIT:

Here's a pic of my wet weather/winter bike with the trekking bars after I flipped 'em around: