This is a great compliment to the NÜOBELL dumbbells. I have the 80lbs set and it is very sturdy. At 6'1", its just the right height for selecting the weight and accessing the dumbbells. And the slightly pronated angle makes it very comfortable at heavier weights.
You could get by with the cradles on the floor. And I'm assuming you bought dumbbells to make movements harder not easier. But the stand lets me focus on the specific exercise I'm performing and safely racking the weight instead of adding deadlifts to every dumbbell movement. There's also a lower risk of dropping the dumbbells when heavier weight are selected and after being fatigued from a set.