Well it finally came, my new n-signia leather case. And I must say that it is not all I had hoped for... Don't get me wrong the fit and finish is absolutely

outstanding but they left out the back rest for my dell. This makes it fit a little lose...

which is both good and bad. Good because removing the x51 from the case is easy, and bad because at times it feels like it may fall out! Any how I think two months for the order was a bit extreme.... The site does say ordering the extended battery case can take up to 3-4 weeks to fulfill, but another 3-4 weeks for delivery is a bit much.
I do like the case and will contact n-signia about the missing part...