I have made it a few times but stopped. I liked it if I put it in the fridge early, when it still had a decent amt of sugar in it. I didn't like it if I let it ferment much longer than 7-9days, iirc.
Also, I liked to cut up fresh peaches or nectarines and put it in there when I fridge'ed it.
That said, it was pretty sweet at that point and just adds sugar to my diet. I figured I could get benefits of fermentation from eating other veg ferments I do and skipped the kombucha. Also, I found that it is much more of a pain in the ass than other fermentation.