Good system. Never saw it before.
I have been tuning guitars for 40 years and only encounter problems with poorly intonated ones (not mine). But no matter how I go about it, or even if I use a tuning device (built-in/plug-in/clamp-on), the absolute super-primo best result is always obtained from within the DAW software. I multi mic and DI and set all the guitar tracks simultaneously to "tune".
Always ends up "dead nuts on" before hitting "record".
Makes me wonder if Peterson's are that good?