Your use of the word "stymied" has prompted me to "LIKE" your post.  I can't offer any advice at this time with regards to the keyboard.
 
I would ask this...is there a specific protocol needed for keyboard over bluetooth?  Does the blutooth designation automatically provide support for such a device?  Maybe the Optimus had this protocol...as do the apple products.  I'd research this further and see what you can come up with.