Has anybody bought the Doona?

[GBBO45]

I am buying an iCandy so a compatible car seat would be sufficient, but I see people raving about the Doona. My thought is though, the Doona seat does not recline fully back, and up to 6 months babies are not supposed to spend more than 30 minutes in the seat. So is this only to be used for the odd 10 minute trip to the post office/supermarket etc? And what are peoples thoughts/experiences with it please?

I've just bought the doona, I've read that babies can use for up to 2 hours like other car seats.
I've not used it yet though as baby due next month. I am just hoping it's not too heavy to lift from the isofix base