I went to configure my Model X and noticed that the site will not allow me to get the standard multi pattern seating with a premium interior upgrade package. Has anyone been able to do that? I have the standard multi pattern seats in my model s (which has been great as I have 3 small children) and so far it has been very easy to clean and keep clean so that is why I am wanting them again on the model x. When I add the premium interior upgrade package though, my seats automatically jump to leather which I get charged an extra $2500 for on top of the $4500 premium interior package and that is not what I want. Has anyone been able to get the premium interior package with the standard seats?