I would say yes for nappy at rest time and, there's nothing wrong with using a pull up if you're out for a few hours or at a function. Cleaning up puddles at the shopping centre or a function with a newborn would be a nightmare, and you have to cart so much stuff around! Also, the potty issue is tricky while out. The worst thing you can do is put too much pressure and stress and your Dd, they can go backwards at the flick of a switch if pushed too hard.
My Ds is 2 1/2 and toilet training, we're just at the stage where he can wear undies out but there are still situations where I'll opt for a nappy but I'll always explain why. When he's wearing a pull up or nappy out, we wear undies on the outside and go to the toilet regularly as you would in undies.
He understands that sometimes we do wee's while we're asleep, so a nappy is there just incase. I still take him to the loo before and after. Plus, thanks to Mr 4months I just can't bare the thought of having extra sheets to wash, I literally don't have the time