Landscapes focused at infinity or off in the distance, no problem, except maybe reciprocity factor in low light. Filter factor, of course, but you already knew that.
Anything relatively close or indoors, don’t forget bellows factor and reciprocity factor that may come along with it.
Either way, it’s pretty much the same as using any kind of external light meter—it just happens to be in a camera. If there’s something the meter can’t see (filter factor, bellows factor, reciprocity factor), it has to be calculated in.