I have had my kickstarter backer copper ukeg 64oz for about 6 weeks and so far it has been great. I've filled it once at a brewery taproom, twice at my local liquor store, and about 3 times with homebrew. It is definitely a conversation starter as everywhere I take it people come up and ask me about it which takes a bit of getting used to for an introvert like myself.
The shape of the faucet causes a few drops to drip after the tap is closed but you can fix that by tilting it forward slightly after a pour. That is the only criticism I have for mine other than that it took 2 years for Growlerwerks to send it to me.