Explicitly instantiated template functions do not work as array properties.  Consider the example:

void foo()(char[] x) {}
void main() {
	char[] y;
	foo(y);		// OK
	foo!()(y);	// OK
	y.foo();	// OK
	y.foo!()();	// Error: no property 'foo' for type 'char[]'
}

I expect y.foo!()() to be equivalent of foo!()(y).