the 2-st, 2 row pattern is reversible: it is 1 row knit, 1 row seed st so you can choose the RS of the fabric for yourself.

DESIGNER NOTES
Vest is knit in one piece up to the underarms, then divided for
upper sections. Buttonholes are worked within the body of
the vest so that no finishing is needed other than joining the
shoulders and attaching the pocket.