It'll be very useful to customers in several scenarios:
1) Ship to a transport company which will then handle the freight forwarding
2) Customers can collect up from a depot
3) Customers can collect from an agency/partner.
Sales orders can be created via the agencies or against the customer directly but it'll be very helpful if there is an option to search and select the correct delivery address (of a different company) in the above scenario.
If this feature is available, it will save time as customers do not need to manually write the delivery address for each order.