Fear not... You can't go wrong with either one IMHO. The Griffins are being offered in somewhat shorter lengths now also, I believe, but perhaps not quite as short as the Shrews. Both are excellent bows. I'm guessing John has a bit longer waiting list (time) from what I've read recently.
I own a 64" Griffin, but have only ever shot one Shrew. I liked my Griffin better than the Shrew, but then again, I was used to the longer Griffin... The workmanship on all of them I have ever seen was excellent.
Guess I really didn't answer your question, but again, I don't think you'll regret either one.