Sure it's worth it, and you get a saddle bag also. Sometimes when you don't need the cover, you can leave it out and just use the bag to carry a few small items with you on your ride.

I didn't see me using the Velcro strap that goes around the seat post, so I used a stitch remover to remove it. I also think it's best with the two straps that hold it to the seat cinched up as short as possible.