Yes, there are 2x tuning capacitors, and they are thinest capacitors I have seen.
It looks simple, but well made clean and solid. It would be interesting to see how it performs.
Would it work with just any plain long wire configuration? Or does it have to be the joystick design?
No, no I have never ran 400 watts pep. I am more QRP operator happy with 3-5 watts pep