My knifes rarely make it in the wash, my 556 (Benchmade) made it through the wash and the dryer last week, still attached to the pocket.
My 5000SBK nor the 175 have been washed, but it's inconceivable that it could hurt them.
On topic, I flip through the catalog (haven't recieved it yet) but I have never placed an order from them.
ETA: Actually we have ordered 2 dribbles from them and 2 counters.