Thank you for the PDF copy of the SWL mag, and also the thread link.
Yes, I did a few search on the Joymatch ATU, and it seems quite contrasting reviews on it. Some people were raving about how great it is for DX, and 59 report QSO with ZLs on QRP etc.
But some say it is a dummy load with variable cap and coil on it.
I would still like to to give a try, but current HF condition being so poor, even high end modern tuners wouldn't do a lot until the sun spot cycle changes.