If the impedance graph has anywhere near the same shape as the 600ohm version, probably not. Maybe more mid-bass and a very slight increase in the last octave.
Today I was supposed to meet a very "motivated" buyer in Anaheim Hills. Waited for the dude for 45 min, called him twice (didn't pick up), and in the end gave up on him... I'm so keeping my DT990s! I'll call it the fun-phone, or maybe my reminder.