There IS someone here doing both...I'm so sorry, I forget who it was...I posed this question a couple of weeks ago. I am doing the WW plan and have done Atkins in the past. I think it is possible to combine the two. You would get far more points out of chicken, fish and lean meats than you would from bacon, cheese and fattier cuts of meat.
Also Weight Watchers does have plans that are designed for higher protein, higher carb and equal protein and carbs. It's a chart with suggested ways to use your points.
Good luck!