Interesting video, yet it still confuses me, to this day, why you need to “design“ a site in ps in the first place. Isn't that essentially double handling?
Surely it makes more sense to scribble out a basic design on paper (5min)
Something like “ok we have a header and footer full width. (dark grey) Simple nav under the header, centred content in a wrapper. Lets put under that a slideshow, Then two columns of content, followed by another section, maybe a hero shot from a gallery, and a bit of a live feed from our blog, facebook, et al“
Probably take even less than 5min.
Then jump into your editor of choice, pump out a basic html wireframe, and a rudimentary css. Prob 15-20min top.
All that fluffing and modifying and “styling“ that you did with ps, do so with your css.
You'll only need to go into photoshop to resize your images for the slideshow (which by now you would have the scripts for to implement, and know exact sizes of, so unlike ps comps would actually function and not be static) logo and any other assorted assets.
By lunchtime you'll have a pretty sweet template, which you can then show your client, or implement straight away into your cms of choice.
Before css was any good, sure, but nowadays you can do all you did in ps with css alone...
It just seems such an old technique to me.