Things are looking on the up and up for these (well, at least them being valid tickets). They come through as Expedia or Travelocity vouchers. I called Disney ticket services. They said that Expedia/Orbitz/travelocity vouchers for Magic Your Way tickets are fully upgradable. The only ones that aren’t upgradable are ones that are convention tickets or “sports tickets.” They further confirmed that Expedia/Orbitz/travelocity vouchers are typically the unrestricted Magic Your Way.
Of course, the CM couldn’t confirm 100% without me having a ticket in hand to read her a # from, but there was no reason why these wouldn’t be upgradable to AP’s or otherwise just like typical Magic Your Way tickets.
Someone with a multi-year posting history on mouseowners.com has posted that they worked for entry for him.
I suppose the final check on this is for someone to use it for admission and then stop by a ticket window to confirm that upgradability to AP or otherwise is an option and that credit is given for the full retail price of the ticket when upgrading.
My next trip isn’t until next Jan, but at this point, from what I’ve read and investigated, I’d feel comfortable buying them. I plan on doing so once my dates open up on these tickets (you have to specify the use dates when you buy them).