This is a great concept for playing the treble range of the Mandolin and the bass range of the Guitar at the same time ,,, but there's a problem! If you want to play both necks at the same time you're screwed. You need four arms and hands to do it! It's a great concept for four armed people ,,, but not so good for two armed people. But having said that ,,, if you've a pardner who plays ,,, this could work out okay. But because you're going to be spending some quality time together up close and personal ,,, Hmm! ,,, You might want to establish some ground rules.