I think a hone is still a necessity for a pro cook. If you can find room to carry a strop that would also be good, in some ways better, than a hone- but it's not always practical to pack on in your stuff. I find my HA borosilicate glass hone to be fantastic for all my J-knives. As for ceramics, IMOHO the Idahone is the best there is. Look for one on eBay in Australia. It's so good that if you have to just suck it up and pay the shipping. It's worth it.