I have worked hot desk environment before. You basically act like a remote worker 2/3 the time, but it's easy to show up for meetings. If you note the 2,500 workers to 1,000 desks that tends to work in large part because you only show up if you have a meeting and only needed a desk between meetings. After that you can just go home and avoid the traffic.

It's arguably just an extension of liberal telecommuting policies if your only there 1-2 days a week your not going to leave important stuff at your desk.