While doing some research I found this thread. For what the description says, I assume this fix has been applied in CM, since I was able to mount CIFS (outside of /storage) before switching from CM to OMNI.
Would these patches be applicable for OMNI? If so, I would try to ask the everest ROM creator to apply them, or even try myself. But I'm afraid I may be lacking the knowledge to judge whether it'd just be a waste of time.
Thanks in advance for any tips on this matter.