Templated opIndex?

[OlaOst via Digitalmars-d-learn]

Here is a class with a templated opIndex method, and an attempt 
to use it:

class Test
{
	int[] numbers = [1, 2, 3];
	string[] texts = ["a", "b", "c"];
	
	Type opIndex(Type)(int index)
	{
		static if (is(Type == int))
			return numbers[index];
		static if (is(Type == string))
			return texts[index];
	}
}

void main()
{
	auto test = new Test();
	
	auto number = test[0]!int; // does not compile, syntax error
	auto number = test!int[0]; // does not compile, syntax error

	int number = test[0]; // does not compile, cannot deduce type
}


So it is possible to define a templated opIndex method in a 
class, but is it possible to use it? If not, should it be allowed 
to create templated opIndex methods?