I read it during my commute. I had ~40 minute uninterrupted on a train each way, each day.
It was problematic. During that period were the only times I ever missed my stops, both going to work and home. And that's with 2 voice announcements per stop over the train PA. Far too engrossed.
Also the closest I've come to getting seriously injured in the station because I refused to stop reading on arrival.