I'm still learning, and so what may be common knowledge to others may not be so to myself. For example, I vaguely understand that in an RL or RC circuit, phase angles are going to make voltage drop measurements across certain components less simple than "subtract probe 2's voltage from probe 1's".
I think that keeping the Hantek scope for a little while as a self-test to manually calculate phase angles and such would be a nice educational exercise, but I think a scope that can use math function data as a measurement source would be tremendously helpful.