Jacquard stitch. It looks like a good way to have some texture without too much effort or change in guage.

Knitted in a multiple of 6, + 4 sts and 12-row repeat.
Row 1 (Right side): K1, * sl 2 wyif, k4; repeat from * to last 3 sts, sl 2 wyif, k1.
Row 2: P1, sl 1 wyib, * p4, sl 2 wyib; repeat from * to last 2 sts, p2.
Row 3: K3, * sl 2 wyif, k4; repeat from * to last st, k1.
Row 4: P4, * sl 2 wyib, p4; repeat from * to end .
Row 5: K5, * sl 2 wyif, k4; repeat from * to last 5 sts, sl 2 wyif, k3.
Row 6: P2, * sl 2 wyib, p4; repeat from * to last 2 sts, sl 1 wyib, p1.
Row 7: K1, * sl 2 wyif, k4; repeat from * to last 3 sts, sl 2 wyif, k1.
Row 8: P2, * sl 2 wyib, p4; repeat from * to last 2 sts, sl 1 wyib, p1.
Row 9: K5, * sl 2 wyif, k4; repeat from * to last 3 sts, sl 2 wyif, k3.
Row 10: P4, * sl 2 wyib, p4; repeat from * to end.
Row 11: K3, * sl 2 wyif, k4; repeat from * to last st, k1.
Row 12: P1, sl 1 wyib, * p4, sl 2 wyib; repeat from * to last 2 sts, p2.

Knitting abbreviations:
Knit: K | Purl: P | Slip stitch as if to purl: Sl.
With yarn in back: Wyib | With yarn in front: Wyif