Heres an off the wall thought for you:
If you are intending to use the JR with your OH, why not give it to him to look after? If you're going to be apart for extended periods, he can give it to you then. I don't know your specific living arrangements, but there must be some way you can put some of the control into his hands to stop him feeling unfomfortable.
Someone here on the forums cleverly called their toy "the understudy" (sorry, I can't remember who!) and I thought that was a good way of showing their OH that the toy was only a number 2 preference, number 1 being the OH himself.
Personally, I would love it if my OH bought a rabbit and used it both together and on her own. As long as I get my pleasure too, I can't see a problem. I wouldn't be too happy if my wifey wasn't up for sex if she'd been using a toy though.