Pros
Pay is good, but even that is not enough for what they ask you to do. If you want to move up, you definitely can, but that's if you want to be a corporate slave.
Cons
Don't expect a break at all. Expect management to continually throw more and more reports and responsibilities on you. You'll end up doing their job, and the job of an FOS equal modern day slavery. The health insurance is high as hell if you have a family. Work/life balance is a joke. Expect to be owned by the company. Trial by error. Tossed into the fire and expected to be held responsible for things you don't have control over. XPO pinches pennies so much that supervisors are doing a two man job, and is still suppose to be responsible for everything. FOS's are managements scapgoats. The drivers and dock workers hate management and vice versa. I can see the union coming in soon because there is already an "us vs them mentality." XPO expects you to care for the company, but they don't give a damn about you. As dock workers and drivers how they feel about management if you get a chance.