I HATE combo dies. They are a real PITA to get set up and are affected by more factors than the seperate dies.
If your cases are not trimmed EXACTLY the same, you will have issues with the crimp. Also if you use bullets that are not cannelured, your more likely to crush the case before you get any kind of decent crimp.
I use LEE seating and factory crimp die. If you prep brass separately on the 1050 you can free up some stations, but toolheads arnt cheap!