Don't see anything wrong with the mobile format. It will just take people time to get used to it. Obviously, the bigger the mobile screen, the nicer this will be, so I wouldn't confuse a small screen issue with the format. A PC format will always be an issue on a mobile device, so this is a net gain.
I had to rebuild my site so that it works on mobile devices. Do I prefer the mobile layout to the PC one, no of course not. The PC format is easier to use on a PC, but not on a mobile device. The mobile format wins there, but at home I don't sit and browse using my phone.
The big gain is in loading speed and readability when a site has a responsive layout. Just spend some time with it.