I suppose as with many "upgrades" it comes down to personal preference. Some people like new wheels, spoilers, lighting, etc, while others do not. If electronic shifting, with the ability to select colors, and make your Prius a bit more unique than the next guy's is not important to you, then, yes, this is probably not an "upgrade" for you.
I'd still have it on mine, were I not selling it. Of the 3 Prius's I've owned (and 350+k miles I've put on them), I considered this an upgrade to the standard shifter.
I probably should have included this in my original post as well, but the amazon link gives more of a description, and there are 9 prius owners giving it 5 star reviews. Again, not for everyone, but if you've been looking for one, they're pretty nice to have.
Looks like there's no way to edit my original post, but with the lack of activity here, I've decided to go ahead and list this on ebay. Please consider this item "sold" for purposes of this thread. Thank you.