I'm... not entirely enthused by this. One of the reasons we doubled encounter xp in the first place was that we thought time XP was overshadowing it in relevance. I'd rather have my characters level by killing things and finishing quests, than by just marking time.
I know this is harder on players in slow games, and I do have some sympathy for this. My ability to follow games has fallen behind the number of games springing up here, so I don't know how some of them are faring. But, eh.
Not voting no yet, but leaning in that direction.