So i am leaving for houston in a few days with my brother to visit family for about two months. We both play guitar so i will bring my seagull grand but because there are two of us we can bring another instrument. I am learning right now the banjo and the violin and i dont know which to bring. I feel like i progressed alot with the violin and i could lose that with out practice for two months but i feel the same with the banjo though i have not progressed as much. Whats your opinion what should i take?

bring the violin...
that way you can practice a fretless instrument

the seagull already has frets