I suppose I should add that I would not have looked at these had I not been experiencing some pretty intense hand fatigue/pain over the past 2 seasons (much less this season, which is obviously good). These work for me in terms of reducing/eliminating my intra-ride pain, while maintaining control in a variety of terrain. As I mentioned, I also find them helpful for "leveraging" on steep techy climbs. Finally, I like that they keep my ESIs at the outermost edges of my bar (I know - they shouldn't migrate inwards if installed properly, but trust me - they do on my bike).
A couple of other points...
These came beautifully boxed. I intend to order some more soon as they will make nice little Christmas gifts for some of my biking buddies (who may or may not like them as much as me - whatever - I'll throw in a bottle of some funky IPA beer and all will be good).
As far as being unnecessary clutter, my bike is pretty minimal. I spent a lot building it. There was a fair amount of gram counting involved (without being ridiculous). Everything from no lock-on grips, to use of a Matchmaker was incorporated. The last thing I want to do is strap on anything unnecessary. I would not go without these now. They are essential components for any go-to mountain bike of mine. But like I said, what's good for me may not be good for you. If your hands do not tire or become painful during a ride, you may not see the benefit I do.