jljack,
I was pretty sure that the case the 301 is in isn't the right one, but I wanted to protect it. I think it should work fine for the loose 15-91, but I figured that one is bullet proof and would be fine case less for the trip home. The bottom of the 301 is nicely finished and sealed, altho I haven't really had a chance to inspect it fully.
I would love to hear from some one who has managed to do something about the "fungus" appearance of the 301, tho.