I'm making some stoner/heavy psych/jazz music and was searching for a ride that is more articulate and crashable than my main dark and dry ride, Sabian 22" HHX Phoenix. This K-Custom is just enough crashable for my needs, but if you're searching for a crisp crash, look elsewhere. 
For my needs, Mr. Lefty is on spot. Rivets really bring out some beautiful underwash, very suitable for jazz-related music. The bell sound is amazing, clear, not too loud or too bright, just right. 
Over time, it is possible this cymbal will become my main ride. 
 
Pros 
+ articulate, dark and woody stick sound 
+ sizzle rivets producing beautiful dark underwash 
+ great, defined sound on the bell 
 
Con 
- despite rivets, very dry crash (that's the only con, really) 
 
Overall 
Great ride cymbal, especially for jazz and experimental music. Highly versatile. I believe you can take it to any gig you're doing, as long as you don't use it as a main crash.