Face detection Fuji 50-140mm lens

Using Face detection on the Fuji Xpro2 with the Fuji 50-140mm F2.8 lens, would I use face detection when photographing a wedding, Model shoot or Family photoshoot?

Fuji Xpro2 continuous Focus

The focus on the Fuji Xpro2 was set too centre point, continuous focus and shooting at 8fps, the buffer didn’t have any issues what so ever, I was using the SanDisk Extreme PRO SDHC 32 GB Memory Card up to 280MB/s, Class 10, U3, their a tad expensive however I always trust these cards.