The VO is an open back with a great 3 dimensional headstage one has to rival.
Depending the source it can be really smooth, or "aggressive".
Comfort is great, but it can't make you forget they're on your head.
My Ironwood VO ticks in at slightly above 620 grams, which could be quite heavy if you don't have the patient to wait for them to settle down, or your neck "acclimated" to their weight. ^^
So is the sound of the VO, with plenty of weight to the music, fast movement and lots of details. Very enjoyable.
Separation is great, but as i said, i can't make me compare them seriously to the SEM5.
It's simply a very different presentation.
More of a complementary headphone, I'd say.
If you can fund a VO, go for it.
You won't regret it, in all honesty.
Sitting here, listening to Icon for Hire with the VO, feed by the A-GD R28/ Tidal.