I have a flip key on mine.
It was the first thing I did when I bought the car and is used daily with no problems.
You sometimes find that some auto locksmiths and pretty much all high street key cutters will not do aftermarket keys because they bleat about the blades being too hard for their cutters but they are being wussy.
If you can get an original complete key then a locksmith can cut and code to your car in about 10 minutes.
It may be worth contacting this seller, I'm sure they will assist in providing a new fob and a new cut blade to match your car.
Programming to the car will be required using an IDS unit but takes 2 minutes.