I put 25 mi on the Bianchi today, my first use of downtube levers in a few weeks. (The Peugeot has SunTour ratchet barcons, the mountain bike has thumbies, Capo #1 is still down for parts (broken rear axle), and Capo #2 is still in pieces for cosmetic restoration and reassembly.) I find I upshift early to avoid having to shift at high speed, just as I downshift early to avoid getting stuck in too high a gear on an ascent. Other than that, I enjoy the fast response of the downtube system, even w/ a late-shifting Campagnolo NR rear derailleur.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069