Had I strung the beads onto the yarn, easy enough with only 3 beads, the beads would have sat between the stitches, and be visible from both sides and the beads would have sat with the hole horizontal to the fabric. The strong black edges of the beads would have worked in the opposite direction of the columns of knit stitches.
By using a crochet hook to get the beads onto the knitted fabric, the beads lie on top of the fabric and their strong edge colour echoes the columnar look of ribbing. Prominence looks right.
Thought, logic and sense had very little to do with my reasons for choosing to apply the beads with a crochet hook rather than stringing them along. I chose it because it was easier to contemplate this early in the morning before coffee.
I took the easy road, and surprisingly, it is the right road.
I'll post some photos later today after I have another bead laid on the knitting.