Sure it does work just fine - for single color prints.
When it comes to multicolor prints, properly set up pressure advance will make the difference in quality (no pressure advance calibration with textured PEI anyway…) as it is only calibrated for the first printed filament.
As example:
If this flow calibration has a result of K 0.04 and the next color needs K 0.01x, or vice-versa, the print can be anything from good to rubbish, but outstanding.