Of course, there are many and many cutscenes at the beginning of the game, but it's better from light temple to the end. But I agree : that is a bit boring to do the speedrun, and to watch this speedrun. Anyway, i'll watch it if it's done

I don't agree with You here. This isn't a game like HL2 where everything is being cut short and almost every chapter has something - WOW - going on. In a dynamic speedrun like that a cutscene does feel a bit slow, here - I don't think so.
Besides I honestly want this run because of two things:
1. There has to be a SR2 run on SDA (SR1 is live, Defiance post-production

, BO2 production);
2. I just LOVE the story.
I watched these 3 videos with immense pleasure. I'm really looking forward for the whole run.