I did try that as one of my quickie tests last summer, but it didn't seem to make any difference to the amps at the battery within the margin of error so I can't say for sure. I won't be able to test again until next April so for now I was hoping to be able to calculate what ought to happen.
I am thinking I might as well put the Eco-Worthy inside where it is easier to get at, even if it costs me part of an amp. (Temp comp not an issue) Hoping to compensate for that somewhat at the panel end if I can ever figure out this MPPT /IV curve/Voltage drop with an answer in amps