It really is important, the oatbran... far more so than getting a colour on your sticks! Truly... it's good for you, helps with cholesterol, helps with "transit" issues, and might even help with the inevitable yoyoing we all find when we stop a low carb diet.
Dukan isn't known as "low carb" over here, but HIGH PROTEIN... If I could suggest anything, it would be to drop the ham first... and keep soups for lunch or snack rather than dinner, so as not to take a load of fluid on board in the evening.
On the French website I frequent, we try to encourage cooking your own chicken, salmon etc as you are going... avoiding tins and packages except for the odd emergency... so you're doing the right things... just that we need to tweak. I actually still don't think you're eating enough and don't forget that, for most of you, you're moving from Atkins to Dukan... so the increased carbs are bound to have an effect... initially... (no?)