I seat and crimp in separate steps, which simplifies die adjustment (plus yields better groups in my opinion). Since I reload more 9mm, I actually bought a second seat/crimp die which I leave set up for crimping only. Use of a Hornady bushing system makes swapping dies quick, really quick.
Setting the seating stem depth with RCBS stem lock nut can be a pain, so I use a little trick. I adjust the seating stem using a previously loaded round and lock the stem in place with the stem lock nut. The final adjustments are made by raising or lowering the die body. Once you get the hang of this process, adjusting seating depth to +\- 0.001 is fast.
A lack of planning on your part does not necessarily constitute an emergency on my part.