I have two of the little beasts and I've recorded a choir concert using both. I used the rear mic on each - with the wide pan setting - and placed them on stands so as to capture the width of the wire. Took a bit of trial and error to get the optimimum spacing.

I did some volume adjustment afterwards using Audacity, and synched up the .wav files in Garageband on my Mac Book Pro. Sounded good.

The important thing is also to experiment with the distance between the Zoom and the voices - and here the acoustics of the place will be important. I wasn't in a church, and I suspect that the church ambience would add some interesting complications!