> confirm this thinking for me?
In a few moments you can wire a pot, a resistor, 4 clip-leads, and an ohmmeter, and TRY it.
Perhaps the _real_ question is: what is the question? Or rather, what answer do you want?
The usual need for a 2-wire reverse-taper pot is something like a timing resistor in a tremolo. "Reverse" means "in terms of human convention, tapered backward from a Volume knob taper".
Using "0"= CCW and "10"= CW, you want something like:
0 = 2Meg
5 = 0.2Meg
10 = 0.02Meg (or zero plus a 20K fixed)
Mount the pot and knob so you know where 0 5 and 10 are.
Clip the meter to center and end terminals. Check for 0=2Meg and 10=zero. (If wrong, use the other end term.)
Now clip various resistors to the pot terminals. Yes you can get 5=200K but then you don't get 10=2Meg.
What you need is a negative resistance. DigiKey has no stock. There are synthesized negative resistances but simple tricks (neons, UJTs, TDs) are bias-critical and small dynamic range. An op-amp can make a not-bad NR but even with 19-cent opamps the complication starts to favor some other approach not needing a reverse-taper.