I've been thinking about this, also about resuming baking. Something I enjoy. For now, I'm choosing to not eat anything sweetened. It's just too much of a trigger for me.
You won't see me bingeing on vegetables, but whole fruits, berries, anything sweet with the texture of bread, cakes, or cookies...look out if I've had a hard day and I'm tired.
I started reading the book Eat Fat two days ago - (it's to the point, informative, and the first book I'd recommend to newbies like myself) - but the pictures of sweets throughout the book and recipes of sweets at the end of the book bothered me. Less now, though I'm now smelling candy off and on. Not sure what that's about and hope it goes away soon.
Keep in mind that Atkins is now owned by a corporation, and their goal is to make money from people like you and me. As I was walking through our new Safeway today, I again made the mistake of walking through their baked goods area. More triggers and a reminder that sugar is good for business but bad for me.
All that said, I don't know if I could stay on the LCHF diet if I couldn't have my 2 squares of 70% cocoa chocolate each day...and I recognize that not everyone likes dark chocolate.
So in answer to your question, another question, how will these bars fit into your healthy lifestyle? Also, is there a whole food that could meet the need? But then, perhaps those chocolate brownie bars are what you need to stay on course with your healthy lifestyle. If yes, then I think it's a good idea so long as it works and continues to work for you.