Cover is out of stock - any experiences with this?

My partner and I bought a sactional a week and a half ago! We bought it in a showroom and the person who assisted us said that it would all ship in 1-2 weeks, especially since we chose a quick ship fabric.

Well, we got home and saw the receipt online and the cushion covers had a 6-8 weeks delivery time!! I talked to customer service and they said our cover (glacier crossweave) is out of stock and there is no way of knowing when it will be back, which is why the delivery estimate is so high. They said we could switch the covers to something else and potentially receive them sooner, but before we decide to do so, I wanted to know if anyone else went through this situation!