In reply to nb:
Hi Neil, I hope you are well.
Great to have your input on this video we made. To be honest just getting through it without looking a total plonker was pretty much my number 1 aim... I might post some outtakes next week!!
But in response to 'why not belay directly from the anchors', well you have a really good point, and very, very often when I am out climbing that is exactly what I will do. I have to admit reading your post above that you are right to a degree, there is certainly an element of 'that's the way we've always done it' about my/our choice to build the belay in this way for this beginners' video, and now your post has had me sit down and have an extra think about it, so thanks!
I'd say this though - if I was to do it again, I'd do it the same way. I'd do that because this is a video series, and building the belay in this way works really well following on from the skills that we've shown earlier in the series, namely clove hitches, and using the rope to equalise anchors that are quite far apart.
Also, the technique of belaying (and the use of the device) stays the same throughout the video series, which is good IMO. I am also thinking that you'd maybe switch to autolock mode on your device for a direct belay? (I usually would!), so that's an extra element that we didn't want to have to cover for real basics.
And not switching to that mode, rigging the ropes to create an independent belay loop in a good position to belay effectively from, seems a bit unwieldy to me, and you could end up cutting off your legs anyway!
How would you do it in that situation?
Oh, and (as a seasoned pro at welding in my gear) I move my legs out of the way in the video, so you'd have been fine getting the nuts out...
All the best,
Jack