Picking up and Purling on Garter Edges

Amy Snell, the Devious Knitter, explains how to pick up and purl stitches at the edge of garter rows.

[@tedpartridge1205]

When using the crochet hook does it matter if you pick up as if to knit or as if to purl?

[@DeviousKnitter]

One way will create a knit stitch in the row below, while the other creates a purl stitch in the row below.