You just MUST mount the OTA with the mount in the CWD and aimed toward the NCP position. I find it actually easier and safer that way than with the uber expensive Casady plate.
As for the CW: Judge for yourself. It certainly mounts and adjusts on the shaft very well. Whether it is worth the money is a totally personal decision.
The one piece Casady safety stop ("toe saver")is considerably more convenient than the stock Losmondy bolt with washer and plastic-handled wing nut.
Others of course prefer the Casady. My findings are with a C-11. A C-14 is a whole other matter.