We have just had some avionics work done and at the same time we shifted a lot of the gear on the right side of the panel to make space to mount an Ipad flat ON the panel - you can buy a clip in mount which you can attach to the panel. I saw a TB20 with this solution whereby the RHS of the panel was an ipad and it was a really nice solution (so we're copying it). I don't know how this would work with your panel though.
An ipad is too big to put on a knee board in my opinion and would just get in the way. I did wonder whether you could mount one as a sun visor
