Two particular issues we are interested in -
1. Is slug flow more damaging to butterfly valves than multi-orifice control valves? Do butterfly valves suppress slugs or do they help to generate them?
2. Fast closure is important in this application. How good are triple offset butterfly valves in this respect?
Choke valves are used to create pressure drop to control flow.
Butterfly valves are normally used as low-pressure drop valves for on-off service.
The two are not normally considered alternatives.  I have never heard of using a butterfly valve to throttle at high pressure drops.  If it is two-phase flow, the butterfly valve will not last long.
1. Temperature, pressure and piping layout affects slug flow, not equipment.
2. You can close choke or butterfly valves quickly.

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