I'm still trying to use up my eBay branded satchels. A buyer paid today and opted for exress post. Can I use the regular eBay branded satchel with an eBay label, or do I need to have a proper express post satchel? Even though it's been a few years now that I've been using eBay labels, I've not had anyone opt for express.

Also, while I think of it, if I decide to change over to printing labels from AP, can I use them on the eBay branded satchels?