FWIW, I think learning 2 circ and two-at-a-time simultaneously could be daunting. I don't knit socks two at a time because I can't stand having more than one ball attached to my knitting...but I do all of my small diameter circ knitting on two circs and I it.
At first, I watched the video, and thought it was skeeerry, then my mom told me it was actually really easy, so I gave it a second chance, and wouldn't you know it, mom was right
One of the things that's great about knitting socks on 2 circs is that you don't have to mess with dividing the stitches or worry about how many to move to which needle...it's half and half, so when you get to the heel, for instance, you just work on one of the needles for a while. And if you pick up all of your gusset stitches onto one needle (the heel needle) then you don't have to move any stitches around, ever. IMO it's so convenient.
But, you know, whatever works