I don't like his list, it's basicly just skink spam, but this time backed up by Kroak's mortal wounds, a few terradons & a troglodon & if he ever has enough bodies survive that he doesn't need skinks he'l summon something more usefull.
As for summoning, the basic idea behind it that he has is good and fun. But again this list is mostly just Kroak defended by endless waves of skinks. Using summoning as a toolbox only really becomes relevant once he's created enough breathing room for himself that he doesn't need more skinks and can actually afford the lower bodycount per CCP of other options. If an opponent can kill what few bodies he has on the table quickly enough, outlast Kroak's damage output, or better yet kill a part of his summoning core, then his toolbox rapidly becomes very limited. And that's in addition to the issues he's mentioned himself (e.g. everblaze comment wrecking havoc with his command squad playstyle)
And of course as he said, he hasn't actually played any games with this yet, so it's all just theorycrafting when it comes down to it.