I have the RCBS Cowboy die, it works great for decapping, the shell holder makes priming a snap. The ability to size is neat, except the brass hulls don’t obturate with BP loads.
I may load and crimp some hunting loads this Fall for pheasant hunting. It would have been nice if RCBS had included an expander insert that went inside the die like the crimping insert. I may find a machinist who can make one.