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 18/Mosquito Bite.
Sampras serve, Agassi backhand and Federer forehand. heh heh