Finally got around to trying properly on the weekend and with it resting on the bar, the 2nd bar in place and the strap over it us quite sturdy but i must say I wish i had known this prior to buying as I'm soooooo particular and hate the fact it doesn't snap in like the Maxi cosi, which I would have brought instead!!

Still considering selling my sns unity and getting a maxi cosi or peg, I'm just so close to birth next week to be e baying right now!!!