Hilarious. I spent a while today looking into the exact same thing. I'll be attempting this soon "ish" and will report back. Not even sure if or how much of a debris problem I have. Really don't want to evac the system but would if I see blockage and can't find a way to clean it.
My current plan (if I can find a path to access the evap face) is shop vac with a custom flexible wand with soft bristles at the end. Agitate and gently lift with lots of suction. Possibly a fools errand as I've never crawled under there.