Pros
I was in Sales at TR Legal (West) for about 8-10 years. Certain territories and products offer the ability to make a lot of money - but, 2014 is the year of Finance cracking down on comp plans and ensuring that doesn't happen. 2015 might be different. As a salesperson, the TR brand will open doors for you. Some of the products are phenomenal, and even when your product shouldn't otherwise be in the mix for consideration, sometimes you'll still be in the mix. Ability to work from home is great if that's something you value. Overall the comp can be good when things are humming along.
Cons
Since 2008 it's been almost annual reorgs of the sales force as the company tries to find growth. If senior management gets up at a meeting and promises "no more re-orgs," don't believe it for a second. If you're smart you can end up in a good position for the following year, or you can end up in a bad spot. New comp plans and territories will be launched on Jan 1 each year and "surprise" here's your mission for the next 12 months, you will have very little say in the matter. It's not political (mostly), its just whatever management decides is the strategy du jour. If you don't work in New York or Minnesota, your career options are going to be very limited, and it will be just a job. HR only hires and fires, they pay no attention to ongoing employees.