Here is the solution.
Using Adobe Ideas v.2.0 and Sync to Creative Cloud.
Share your Adobe Ideas file with your friend.
Your friend can download and to the local Mac HDD then upload to friend's Creative Cloud accout using Browser.
Now your firiend can use iPad to Sync to download Adobe Idreas file to the iPad to use the file.
We will improve the workflow to make it much easier to share via Creative Cloud.