No, I don't have my sous vide thingy...YET. But we'll order one tomorrow.
In the meantime, I have been poring over all manner of YouTubes, especially on a site call Chef Steps...these folks are all about the science of sous vide along with beautiful (though skimpy) presentation.
They make the case for searing your steak BEFORE bagging it...even a day or 2 before you put it in the bath. Don't go trying to poo-poo this idea without watching the video. Then you can holler at me for peeing in the pool.
Here it is: