Not yet, but I probably will sometime in the next couple of months. I want to find out if the US version of the dual pack includes the steel book or anything else extra before deciding what to get, as I'll probably get both games.
I also still need to figure out what the deal is with preordering stuff from Best Buy before my GCU runs out in August (I'm not clear on whether I'll get 20% off so long as I order before it runs out, or if it only applies to games that come out before then). If I can get discounts so long as I preorder by the end of August, I'll probably preorder everything I plan on buying for the rest of the year after E3.
I do generally preorder these days for the convenience and peace of mind, at least for franchises I know I'll end up picking up regardless of reviews. That way, I don't spend as much time obsessing over something I'll ultimately end up buying anyway, leaving me with more time to either get work done or actually play games.