I have little hope for success in my quest, but here goes.
I have an iPad2, a Zagg bluetooth keyboard, and an Apple Wireless Keyboard.
Why do I want two keyboards paired?
I have vision problems plus I want Zagg special function keys (like the Home button and lock keys) not available on the Apple keyboard.
Vision: I cannot easily reach the Zagg keyboard if the iPad is far enough away for me to focus on the screen.
The technical problem:
I can easily pair both, but with both paired, the Apple keyboard behaves oddly.
On the Apple keyboard:
Press Option-Arrow (any of the four) and the cursor jumps twice -- i.e., two words instead of one, two lines instead of one, etc.
Press an Arrow key alone, and the cursor advances one character at a time, but only within words -- it skips the space between two words.
The Zagg works without problems with both keyboards paired.
Turning off the Zagg eliminates these problems with the Apple keyboard -- of course.
I don't expect there to be a ready solution -- or any solution -- but I'm impelled to ask by the tiny possibility that there is a way to solve my problem.
Thanks for listening.