Pocket 100MHZ oscilloscope?? part1 - intro and teardown

Teardown, evaluation, theory, and speculation about an odd little portable '100MHz', single channel oscilloscope. I saw it and had to grab one to peak under the hood. Spoiler alert: there is some strange stuff going on... I broke the vid up into 3 since it was stupidly long, but I wanted to shoehorn some theory in there, and add some speculation.
Here is DAAAAAAAAVE's vid about the same scope
EDIT: cpassuel has pointed out in a comment that some clever people ARE INDEED working on getting this gizmo more workable. They are still in the initial stages, but you can check the progress here: /
And if you end up being interested after watching all 3 vids...
FNIRSI 5012h Oscilloscope
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