Here's the front light my friend is using. She bought it from Soma. It looks a lot like the Lumotec.

For what it's worth, I'm of the opinion it's a really good idea to run a headlight all the time. That's why I like a dynamo hub and a light that's always on for most riding I do. Personally, I wouldn't consider using a bottle dynamo. I'd prefer a hub dynamo, followed by battery powered lights, in that order.