The key with gut is to avoid kinking during stringing and to avoid heavy moisture. As long as those are met, it is a very resilient string.
It should be fine for a year or more even in just a ziplock.
Head Pro Tour 280/630 MP, 18x20. Tour Bite 1.15/Mosquito Bite 1.16.
Sampras serve, Agassi backhand and Federer forehand. heh heh