Can UF work with Invitation Code Checker?

Hi

I am running a Buddypress enabled site with Ultimate Facebook. URL is http://www.extrafriends.co.uk

At the moment its behind an invite code whilst we bug fix and I am using a plugin called Invitation Code Checker to control this. Info on that can be found at http://buddypress.org/community/groups/invitation-code-checker/

My question - can these 2 work together or is there a better solution?

At the moment the 'login with Facebook' option in UF bypasses the code checker process and renders it useless.

Alternatively, do you think the WPMUDev signup plugin @ https://premium.wpmudev.org/project/signup-code would be a better bet?

Thanks!