I'm with the crowd that believes a new gun shouldn't need to be modified just to make it shoot comfortably.
I'm also one who thinks the 2.0 finish is too rough.
I shoot a lot. Not as much as a top level USPSA shooter, but far more than the average gun owner in the US. Until you've fired 600-1,000 rounds in only a couple of days, you don't really know whether it's comfortable or not. Of course if you're one who never shoots more than 50 at a time, then that's the number that's important to you. I shoot more than that.
The grip doesn't need to be rough to provide good grip. Look at this grip:
This pattern, in my opinion, is the best on the market today. It's completely flat. However, if you use the proper grip with the proper tension, it provides excellent retention, without hurting. Because it's flat on the surface, it doesn't rub your skin raw while carrying it under a t-shirt. I've used it in hot, cold, rain and wind. The G-10 material is almost indestructible.
By contrast the M&P 2.0 grip is like holding a rasp.
OK, maybe not that rough, but certainly 60 grit sand paper rough. Of course that will provide a solid grip. It's just not optimal for carry or long periods of use.