'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Barend shifters are all friction for front shifting so any bar end will work with either a double or triple crank of any make or model. I've never seen one yet that can't roll up enough cable to cover a triple.
Spec' Tarmac (road), Spec' Secteur Disc (commuter & tourer), Salsa Mamasita (MTB), CoMo Speedster (tandem), Surly Big Dummy (cargo), Airnimal (folder), a train pass, and NO car :)
I currrently have one of those shifters controlling a QUAD crankset on our tandem (24-32-42-54), and the shifter still has a tiny bit more movement available than the front derailleur will allow with the limit screws removed. So, a triple is easy in comparison.