It is a Wlmart exclusive, just like Starscream. And yes, I bought both the deluxe class twins and indeed, the transformation was as engaging as MP Prime. I know that seems unbelievable, but when you consider how lacking the Hasbro instructions are in detail how to convert the figure you'll realize that you just spent the same amount of time on Skids & Mudflap as you did on MP Rime or your first Alternator.
The issue with deluxes like the twins is the same issue as with most Alternators; chunky robot parts made from hard plastic inside thin plastic car shells, with a demanding transformation that requires pieces to knock or scrape past one another if you are not extremely careful, which you aren't when you first open that toy you wanted so badly.
