I have one of these on my 4x5 works just fine, not spectacular though. i had to buy the whole 110B to get mine, so I have the front 'pinhole' cap.
BTW, Dan, the stuff I bought from you came in this morning. You (and the USPS) are super fast.
Hey Rick, if you ever want to sell that lensless 110B, let me know. I have an extra Enna Ennit and want to do a pack film conversion. email@example.com