Thing with mandolins is strings being doubled up to make more noise, you need reasonable finger strength.
I can't do the speed or the bending I do on the electric guitar.
But the tuning in 5ths is really interesting, particularly when you realise this turns the chords upside down, which is weird but brilliant at the same time.
I have a side project to restring a short scale guitar in 5ths with a drone string or two, but haven't yet done much about it.