I actually sold Cutco knives for one summer in college. This was 1987, and I still make daily use of the knives that I purchased for my presentations. After 20 years, they could use a sharpening (I can't seem to remember to send them in), but they have been excellent knives.
Some of my presentations were actually to people who had owned Cutco knives for 15-20 years when I visited them. It was interesting for me to see how well they had held up, and gave me a lot of confidence in selling the product. (I even had the clients write letters explaining how much they liked their knives, which I put in my prospectus.)
The knives do hold up well in the dishwasher. The rivets are (or at least were - I assume they haven't changed) made of a nickel silver alloy, as opposed to brass. The alloy won't expand/contract at dishwasher temperatures like brass will, therefore, the handles won't loosen after a few cycles.
I would recommend doing some price shopping before the salesperson comes to your house. As I recall, Cutco was expensive, but very competitive with the other high-reputation brands. I don't know whether or not that's still the case, though I can't imagine much has changed.
A tip: Your salesperson probably won't have much, if any, wiggle room on pricing, but back when I was doing this, we did have some ability to increase (within reason) the amount of freebies we threw into the deal.
I don't really care for the paring knife (it feels unbalanced), but the rest of them are outstanding. In addition to various kitchen knives, I also own the hunting knife and the filet knife, and am extremely pleased with those, as well.
I've actually been waiting for someone I know to sell Cutco so I can purchase some more and have a complete set...
A word to the wise - believe people when they tell you that these knives are sharp. Dangerously so. Never touch the blade with your finger, never toss one into a sink full of dishwater and inadvertently grasp the blade fishing it back out, and be very careful washing/drying them...