Expanding on Dangerous: If you do make it to become an SC, the danger still remains.
For example: you diligently work to grow a $650,000 territory to $900,000. Based on the math, it is now more profitable to move from Salary/bonus to Straight commission (12.5%). So, you do and your life improves financially. Perhaps you buy a new car, put your family in a bigger house...essentially alter your life to match your new, earned financial position.
Then, one day, out of the blue, your RM calls and lets you know that the territories are going to be "re-arranged" and/or the "team" is going to take on a new member. Suddenly, your territory is back at $750,000 and you there's no going back to Salary/Bonus. You could actually be making less than you were when you first started. Thats "Dangerous"!!
Not only did this happen to me, but I've seen it happen to 4 other reps. BTW, all hit quota that year.