I just realized tha the pattern for this
bag says to do it in rev st st...I know that is reverse stockinette stitch, but what I don't see is how it makes any difference when felted. Is there a difference in the end result when you use different stitches? Is one "sturdier" than another? Stockinette seems rather thin and plain old garter seems thicker, but...?

Would it make any difference if I just used garter stitch?