I start one today!
I read through the pattern and decided maybe it wasn't so good for vacation knitting because of the extra notions needed (ie. cotton batting, eyes, etc.) and because so much of it is made in seperate pieces, I could just see myself losing something. So I started now and depending how it goes, I might finish it before vacation or otherwise it will wait till I'm home.
I'm using stash Patons Decor (wool/acrylic blend) which is not a DK weight but of course with a size 3 needle it makes a very tight fabric which should be fine for stuffing. My Sheldon might just end up a bit bigger than supposed to!