I have a battle belt set up for Shadow 2/Shadow 2 compact with a home made retention holster. For 2 gun matches I am still shooting a Shadow 2 full size, if for some reason I NEED the belt, it will have the compact in it.
I don't think you can go wrong, I would just consider how long you plan on carrying the gun around. The compact takes all of the same parts so you can Cajunize it to your heart's content.
Why not get both?
One last comment, I don't think you're going to find a retention holster for either, unless you are using one of the "universal" ones that index off your light.
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