Having used brifters (Campy Ergo-Power), bar-ends (Rivendell Silver, friction only) and down-tube mounted friction shifters (many different models from Simplex plastic to C-Record), I am going to stick to bar-end or down-tube mounted friction shifters for touring. The Ergo-Power levers are fun, it's very convenient to just keep your hands on the brake lever hoods and move a thumb or an index finger to shift, but I don't appreciate having to change cables, and housing once or twice a year when the shifting loses accuracy. I certainly don't want to have that happen on tour. I will keep the Ergo-Power brifters for my road bike, but for touring and commuting I will use friction shifters for sheer reliability. Bar-end shifters are nearly as convenient as brifters, but if I go on a tour that involves loading the bike onto ferries, trains or planes I will consider switching to down-tube mounted shifters just to reduce the chance of the shift lever getting knocked around during the loading/unloading process.