I'm a fairly experienced home cook and I'm looking to upgrade to a good quality chef's knife. I'm thinking about getting a Japanese knife (e.g. a Shun Classic) but I've heard they can take a long time to sharpen using whetstones, on the order of 45 minutes to an hour.  So if anyone out there has experience with one of these knives I'd like to know how often and how long you sharpen them. I know there are a lot of factors that determine the answer, so you can make the following assumptions:   Japanese style knife Rockwell hardness in the 60 - 62 range I'll probably be used a total of 1 - 2 hours per week Mostly cutting fruit, vegetables and soft meat, no bones I'll be using whetstones of 1000 grit, 3000 grit, and a leather strop I want the knife to be pretty darn sharp I don't plan to let it get all that dull. I'd rather have frequent, shorter sessions than fewer long ones   Update  If you're not comfortable with the above question, how about this one?  Do any home cooks out there own a Japanese knife that they sharpen with whetstones? If so, about how often do you sharpen it and how long does it take to get it pretty sharp? 
It does take roughly that time (45m) to sharpen a knife with a sequence of whetstones. However, you should not need to do it often. With a 60+ hardness, just some gentle stropping once a week is enough to maintain a sharp edge for at least 6 months. Stropping takes a few minutes. You will only need to sharpen after lots of heavy use, or if it has been damaged or poorly looked after (left in the dishwasher, used on glass etc) 