It doesn't need to be a replacement, just comfortable enough that you'd be willing to throw an iPad and a keyboard (And maybe a pencil/mouse) in your backpack i

It doesn't need to be a replacement, just comfortable enough that you'd be willing to throw an iPad and a keyboard (And maybe a pencil/mouse) in your backpack instead of a laptop if it fits your use case. There's a non zero amount of people that have ditched the PC as their main computing device for this reason