We looked at one of these before we set off for our summer holiday a month ago, like you noticed the weight, day 1 the weather was fantastic, my wife said "I wish we'd got one", so we ordered one and had it delivered to the site we were on, absolutely fantastic, we ended up using it at least once every day after that, we had the carry chef bbq one with most of the tops, it all comes apart and neatly stores in a bag and is quite light, I haven't weighed it if I'm honest but have no worries about the added weight of it, like I say we used it at least once eveyday, great for BBq's and cooking breakfasts in the morning, surprisingly good on gas too.
I'm not biased but I think if you buy one you will not regret it, there's something quite satisfying about the look of envy on other people faces when they walk past your outfit early in the morning having to walk through the smell of bacon eggs and sausages cooking outside/