Great to find out other people feel like I do!
Initially, I discounted the SA as an unstructured backpack, but realizing that it has the same capacity as the WF, and thinking that there are times when I just want a simple bag, has made me think again!
I was going to order the Steel combo but based on the comments here from backpack, I think I might just order the one with the Iberian lining and wait for the backorder to be available in May. It just looks like it might be a perfect little sleepover-type bag.
PS: Is there a clip on the inside to use your snaphook with?