yeah...it makes sense. if you try to spin a phil hub on it's own (without a wheel), it's super sticky and draggy. sometimes, i really feel it on the bike that has them, but most of the time it's just super silky smooth. i have a set of those D/A hubs too. really nice. i can fly on the bike that has them...sometimes i'm afraid to ride it because it's too tempting to just go super fast.
in that pic, the little brown ring right next to the lower hub is a seal in case you ride them in muck...that seal causes all kinds of drag though, way worse than anything a phil or even a miche hub would put out. i tried it once and it was so heinous that i took the hub apart again an hour later. i also rode my rear hub through three years of boston wintery muck and scum without an overhaul. i opened it up this winter and it was fine. i probably should've overhauled it sooner because the bearings were bone dry, but...live and learn.
i wouldn't lube them only with tri-flow...that's just begging for premature wear/siezure.