Hi,
No ; basically that's not possible.
Address custom fields are made to be used on the address, when you edit them.
Order custom fields are made to be use on an order, during the checkout.
It would be possible if you modify the Hikashop core files and implement a complete full system to handle the dynamic edition of one single and unique address custom field in your checkout.
A quote from a developer would be a lot more than the price of HikaShop Business.
And it would consist to re-invent the wheel which is already there with the order custom fields.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.