We do plenty of Gildan's 50/50 fashion heather colors with QCM inks and no special considerations. Sunset, Midnight, Russet, once we did Heather Sapphire...probably a couple others.
Sprint 2000 HO aimed at 385, 22-24fpm on the dryer belt. Never had any problems with dye migration or sublimation on them.
We do usually underbase...but not everything and like I said, we haven't had any problems. I'd imagine a PFP of any color would yield very similar results.
Your mileage may vary, every shop is different, et cetera.