Can’t see where the zip ties are required, as mentioned above-
Conveniently they aren’t shown in the vid and it does make it all appear very straight forward! They essentially wrap around the saddle rails and top tube- I guess someone decided there was a risk that the whole thing could shift?
I was hoping it would be a quick operation to whip it on and off. Granted it’s just a couple of zip ties but it’s an extra faff I don’t need with an impatient miniature humanoid!
Shotgun 100% for ease of fitting! Can even swap between bikes* mid ride should the need arise.
*assuming similar top tube width