When I do this I almost always let the bag burst (as voltaggio actually does in the demo video too!)
And I do seal the carrots in with a good amount of butter.
(Edge sealer. Not chamber)
And for me the results are just about perfect and it takes a total of 3 mins or so in the microwave.
So I do it often.
Yes doing them in the circulator at 185 for an hour or more might yield a very similar result.
But it takes hours AND ties up a circulator I usually am using for something more specifically worthwhile. The microwave version comes out perfectly fine.
For me.