On a thinner two-piece strap (leather, canvas, rubber, etc.) the 600T becomes more wearable but the top-heavy seating is only minimized, rather than being resolved.
link In
link a similar fashion, a NATO works and is decently comfortable, but it makes the watch sit even higher off your wrist.
link The best luck I had was with a two-piece thin rubber from Hirsch, which suited the 600T's design and allowed the watch to sit more flatly on my wrist.