You really don't want one permanently, they just get in the way.
I have a dual yoke, I like it and would recommend having one over renting.
Just to make sure we cover all the bases, I don't think you need a yoke at all, just use the rudders.
Well, I would say you need A yoke.
Congratulations !
Post the request on beechtalk, lots of dual yokes collecting dust in the back of hangars.