UPDATE: We're getting Xenoblade 1 on NA Wii U eshop tomorrow! Good move NoA

[Vodacixi]

TK14 said:
This! I've been waiting so I can play through it again without having to delete one of my saves from my original version. Plus, I have a friend who played XCX and wants to try the original but doesn't want to have to spend tons of money to do so.

You'll have to delete them anyway. The Wii games on the eShop run on the Wii Mode of the console, just like if you put the original disk. So, if you had save files of Xenoblade Chronicles, the eShop version will load them.