This is a personal compatibility patch that I made a good while ago which covers the following mods that would otherwise conflict: "Monster Facial Animation", "Enable 1st Person For Werewolf and Vampire Lord" and "Growl - Werebeasts of Skyrim". And unless you've figured it out, this fix also covers werebears and vampire lords.
-"I can't seem to ready my claws while in first person"
This issue is most likely present in the 1st person mod alone, try to sheath your claws in third person, enter first person view and then ready your claws.
If you're having any questions, drop me a PM and I will try to get back to you as soon as possible... I just don't mod anymore for the time being and won't update it, I only wanted to share this patch that I made a while ago and see if other users also will find it useful.