Is it safe to use 'is' to compare types?

[Yuxuan Shui via Digitalmars-d-learn]

On Thursday, 3 March 2016 at 23:51:16 UTC, Adam D. Ruppe wrote:
> On Thursday, 3 March 2016 at 23:46:50 UTC, Yuxuan Shui wrote:
>> Will typeid(a) is typeid(b) yield different results than 
>> typeid(a) == typeid(b)?
>
> No. Indeed, opEquals on TypeInfo just calls is itself.

But opEquals also has extra comparison:

         auto ti = cast(const TypeInfo)o;
         return ti && this.toString() == ti.toString();

This makes me feel they are not the same.