I am not very familiar with Gustin denim, the extent of my knowledge is their website, and the times it has been mentioned here, however it should state on their site if the denim is sanforized or unsanforized. If isn't listed/stated on their website, email them and ask them if their denim is sanforized, and if they suggest a soak before wear, before you get them hemmed. If they are sanforized your good to go, if they are unsanforized and you don't soak them and get them hemmed, after your first wash you will wind up with a pair of jorts. Not a good look. And you don't need to necessarily wash them. I prefer my jeans to maintain their dark indigo shade before the break in process ensues, this also helps with creating higher contrast fades. Just do what I do and fill a tub full of very very hot water and submerge the denim completely, getting all air pockets out, and weigh them down with a few objects and let them soak for 30 minutes. After that 30 minutes, remove the jeans, empty and refill the tub with steaming hot water and then soak them again for another 30 minutes, then hang dry. Without the agitation that washing machines impose, you will lose very little, to no indigo, just perhaps some excess surface dye. Just be sure not to agitate the denim when they are soaking cuz this can lead to color loss. This will get all the shrinkage out and you will be able to safely hem them at that point. Again though, this is only necessary if the jeans are unsanforized. Hope this didn't come too late.
This is great, thanks. They are sanforized. Thanks for the help!