Mr. Shine wrote:Your question is answered in the beta Tactical Reserves rule itself:
"This does not apply to... units that are set up after the first battle round has begun, but before the first turn begins (such as those set up via the Forward Operatives or Strike From the Shadows Stratagems)."
That isn't the part of the rule he is asking about. Any unit not deployed on the battlefield counts towards the half you can have deployed elsewhere pre-game. That includes units deployed with the Strike from the Shadows stratagem.
The rule you're reffering to is the "Not outside your deployment zone turn 1" rule.