Using landed cost for 1 customer

Hi all! Since QuickBooks recently introduced the ability to have landed costs, I am wondering if it would work for us. We actually have one customer that has the landed cost on POs. So we have to mark up the item with landed costs. We typically don't do this for other customers. We do a pretty substantial amount of work for this customer. Would it make sense to start using the landed costs for just this one customer? Thanks!