When in the woods, I wear a British smock.
Looks like you wear a smock in the vid as well.
I posted a thread on my dyed and 'modded' Brit windproof DPM smock and its contents here:
https://bladeforums.com/threads/dyed-british-desert-dpm-windproof-smock-awesome-gear.1552291/
I like the idea of carrying gear in the pockets (instead of a backpack).
This of course only for those times, I am not away for longer trips, where I of course have my hammock etc in the ruck.
I currently carry the following in one LH 'Napoleon pocket;' Titanium Lifeventure cup with lid. In the cup; Vargo folding titanium alcohol stove, white spirits/alcohol, titanium foil as a wind barrier/breaker. Also in the same pocket; Small containers of either coffee or tea, Douglass Field S lighter. Within the pocket itself, there are three pen pockets. In the pen pockets; fire steel and scraper, Olight Baton flashlight, Fällkniven DS3 diamond/ceramic sharpener.
Outside LH chest pocket; Compact folding seat and compact emergency 'survival' blanket.
Attached to LH chest pocket button via paracord a homemade flat kydex match holder.
LH lower pocket; gloves, Length of paracord, four homemade bungee cords extra compact (for hanging poncho as a shelter in case of rain), compressed fire making cubes.
RH Napoleon pocket; Vargo Titanium bottle and Keith Titanium or KleenKanteen bottle. Also alu container with heavy duty safety matches.
Inside pen pockets; my old SAK Spartan.
RH chest pocket; Compact poncho, Titanium Emberlit Fireant.
RH lower pocket; Small squirt bottle of extra/back up white alcohol. Compact package of food.
Dropped in a chest pocket; often either a custom woods knife (three inch blade), a modded Spyderco Mule, a Terävä 110 Puukko or other.
Yes, the smock holds a 'carp' load
Most of the above is vastly overkill for shorter trips but nice for longer trips.
Also its better to have and not need than vice versa.
Besides, I like being able to just grab the smock and go.
Its always packed with (most) items, so no need to go searching for gear.