My TrimPro came with the appropriate pilots and shell holders for most everything I load for (except a shell holder for 460 S&W - but the TP-2 should come with a universal shell holder). I did buy a 3-way cutter for trimming 223 rem, since I have a lot more to process than I have in other cartridges. I didn't have to buy anything else.
So... no, you shouldn't have to buy anything else.