I know a lot of you use the Pelican 1510 case when you travel. Have any of you put the 300mm f2.8 IS in it? Does it fit okay? I have a trip to Churchill this October to see the polar bears and I need to get a hard case to carry on the various flights. I'm also taking my 30D, 24-105L, 100-400, 1.4X & 2X with me.