switch 文に `ValueTuple<int, int>` 以外を使って書く方法はないのだろうか？

csharp7try2.cs

using System;

namespace CSharp7Try
{
	class Program
	{
		static void Main(string[] args)
		{
			TrySwitchFeature((x: 1, y: 2));
			TrySwitchFeature((x: 7, y: 2));
			TrySwitchFeature((x: 1, y: -2));
			TrySwitchFeature((x: -4, y: 6));
			TrySwitchFeature((x: -4, y: -2));
		}

		static void TrySwitchFeature((int x, int y) item)
		{
			switch (item)
			{
				case ValueTuple<int, int> i when i.Item1 >= 0 && i.Item2 >= 0:
					Console.WriteLine("x >= 0 and y >= 0");
					break;

				case ValueTuple<int, int> i when i.Item1 >= 0:
					Console.WriteLine("x >= 0");
					break;

				case ValueTuple<int, int> i when i.Item2 >= 0:
					Console.WriteLine("y >= 0");
					break;

				default:
					Console.WriteLine("x < 0 or y < 0");
					break;
			}
		}
	}
}

output.txt

x >= 0 and y >= 0
x >= 0 and y >= 0
x >= 0
y >= 0
x < 0 or y < 0