scaling of templates with alias argument

[Frank Benoit]

void func( alias T )(){
    Stdout.formatln( "member {} {} {}",
        T.offsetof,
        T.stringof,
        typeof(T).stringof );
}

class MyClass{
    uint data1;
    long data2;
    void reg(){
        func!(data1);
        func!(data2);
    }
}

With this mechanism, a template function can access the type, value and
external-scope name of the argument. But each call or func makes a new
instance of this template function.
Using such template function massively (like little text preprocessor
makros in C), will generate big binaries. Is that true?
Is there a better way?