WTF are you talking about, there are tons of hands on reviews. They are not like Apple, keeping embargo on reviews because they know it will say "bar is gimmick or meh"
Ok, let's take a look at those, shall we?
In the first configuration, we have someone who has to stand-up all day, hovering at a very inconvenient angle. Back-pain city! I know. It's just like my kitchen counters at home, which were designed for a 1950s woman's average height of 5 ft 3 in. instead of a man's height of 6 ft. I have to bend-over at a 10 degree angle to work on stuff on the countertop, and after about 10 minutes, I want to scream! NoThankYouVeryMuch!!!
And as the second video shows, that person has to keep their arms suspended JUST LIKE I WAS SAYING, in a most-unnatural position. Looks good for a short demo; but tell me how your back feels after a few hours of that...