I am not an advocate of most FFMs for recreational diving. They are common in public safety diving due to their use of comms and potential to be diving in contaminated water environments, but in my opinion the average part time dive rescue squad member would probably be more effective without one.
The downsides are that they are usually large volume masks and are positively buoyant unless you use a weight kit. Unless you have a surface breathing valve it also means you are breathing off the reg before you submerge, so there is extra gas consumption as well as far greater potential for a freeze flow in ice diving or very cold water.
You also can't share gas in the normal manner as your primary reg is not available to an OOA diver, and if you need to bail out to your octo, or a buddy's octo, you'll need to remove the mask. Consequently, you need to be comfortable breathing without a mask, and you'll need to carry a back up mask that you'll don and use while sharing gas.
Another potential concern is that some full face masks come in a positive pressure version and that adds other concerns due to greater gas use.
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That said, the Kirby Morgan M-48 is a hybrid mask that uses a normal mask covering your eyes and nose with a lower oral mask with a removable pod. It is very amenable to recreational and some forms of technical diving. The 2 cavity design of the mask allows you to:
1) dive the mask as a full face mask with full com capability if you want that,
2) dive the mask with the lower pod flooded, still breathing off the second stage via a mouthpiece (not sure why you'd do that, but you could), or
3) completely remove the lower pod to breath off another regulator, share gas, etc.
And you can easily remove the pod, re-attach the pod and de-water the mask to go back to full face mode underwater.
The M-48 is also comparatively low volume with a good field of view and does not have excessively positive buoyancy.
Perhaps best of all, you can buy just the mask and use your own regulator.
M-48 SuperMask | Kirby Morgan
Kirby Morgan has also created a more rugged version with a nose pinch device, a more durable mask frame (but less visibility) and mount points for lights and cameras. I suspect it's aimed at the commercial market somewhere in the same general range as the EXO-26.
M-48 Mod 1 | Kirby Morgan