I have used the Aeropress with the Kyocera grinder for both local and overseas travel. It is a very good lightweight and robust solution. Works well. The Kyocera also makes it very easy to get the ground coffee into the Aeropress as the diameters are a good match.
The Hario is larger so requires more space, the Porlex grinder is also an option but it is not as easy to hold as the Kyocera and looks as if the case could be bent if squashed or hit hard while traveling. The Porlex ceramics look very similar if not identical to the Kyocera.
Kyocera is a company that is welll known for its ceramic technology in electronics and artificial joints so they do know their materials