I've got them! Incredibly cheap way to try narrow bars if you're on the fence. I personally think the shape is great. I'd personally prefer if they were a touch more narrow in the drops but i dont use the drops much anyway. I will probably upgrade to narrow carbon bars in the near future.
As you said, not light by any means. i'm running them on my spare bike(2010 Giant TCR) which have 25c tyres on narrow rims.
But one thing to note is theyre stiff.. very stiff.. the combination of narrow tyres/rims, alloy fork steerer and alloy bars means a lot of road buzz on my hands. I haven't ridden alloy bars in many years and i didnt realise how much difference carbon bars make! Might be good to run them on wider tyres with lower tyre pressure
