For a proper classics tandem I think Roglic isn't a great enough finisher while Dumo isn't punchy enough to make the right groups. Just let them colead the Vuelta and see who's stronger on the road.I'm happy for the level he showed today. Not really happy he's working for Roglic everywhere now.
Ofc, Roglic wins so it's justified (or in TDF case he was better anyway). But I sure hope it doesn't become the norm.
The team atmosphere seems to be really goot at Jumbo which is really nice to see.