Thanks Al, this was indeed an interesting video!
I’m also considering this advice I received in my learning log from @DavidP:
And I guess if it comes to miking the amp as shown in the video, it can also be done with the 2i2 / 4i4.
Plus this audio-synching & video editing bit seems interesting. I’ve never really tried it before (didn’t have the equipment and need for it) but I think I’ll give it a try.
One lightbulb moment in the video was when he first switched to the dynamic microphone in front of the amp, and I recognized that cushioned kind of typical radio DJ tone, something that can get on my nerves 
If I understand correctly, the condenser mikes are more suitable for moderate volumes and the cardioid pattern reduces the background noise picked up by the mike. Do you think something like this would be suitable for recording acoustic guitar or miking an amp?