But I've always been reluctant to do both at the same time, on the same assignment. It's an incredible source of mistakes, and if you can correct a lot of things on stills as long as you shoot RAW, video is just a multitude of jpeg frames in a long sequence. What you shoot is what you get in the end, with much less processing latitude when you shoot in delicate situation, available lights, etc... Unless you use RED cameras, RAW footage is not on the list of even the most recent DSLR. Things could change though.
Take that short edit for LAFUMA Clothing. The best way to deal with that is at least to have a two cameras set up : one dedicated to stills, the other one for video. And what is cool when you shoot in a hurry with no assistant, is that you have to be a wise man and know your limitations, as Clint used to say. Go basic with filming, use one technique, not a thousand.
In this case I had to duplicate what I was shooting on frame. After all, my clients love me for the way I frame, so let's try to keep that eye while filming. Even simpler to turn around your models with a steady and a large aperture lens, keep that cool shallow depth of field effect to good use.
Of course, this only work if you don't have to follow a too rigid script for your video edit, or it will consume all your precious time. Make sur your client is aware about that, or make him ready to pay double for a double job !