Those are made in China and are not all that bad but they are really uncomfortable, have quality control issues (sharp unfinished plastic edges, maybe not durable) and add quite a bit of weight to the New 3DS XL but for the price they are not bad and for the most part does what they are suppose to do that is to protect the 3DS.
If you are in the US there will likely be some cases to choose from once the XL releases from companies like PDP and such. Maybe just wait a bit, would be cheaper than importing as well.
Their regular 3DS XL TPU case also got rave reviews so going by that I expect this one to be a fantastic case as well. I never used a case on my old XL but the New XLs to me are much prettier with that glossy metallic looking finish so I want to be sure it's protected.