Well, initial testing has not been favorable. It's going to take a bit of work just to allow multiple versions running at once. To make matters worse, it appears (at first glance) that it might be a huge performance hit as well due to passport issues. I'm not hanging up on this issue just yet, but will have to table it for a while for other priorities.
So, if you'd like to see this feature added in the future... sign your virtual signature on this thread accordingly.