I'm worried that, because of the way it's constructed, the loops that the strap is fed through might make the bag hard to open very widely. If I'm reading the pattern correctly, the loops are extensions of the front of the bag that are doubled over and "caught" in between the back of the bag and the flap. This seems to me like it would make it hard to pull the flap back fully and open the bag enough to get, say, a hand in there to rummage around. I'm afriad it will make the top of the bag too...closed.
So - if you've knit this bag, have you had this problem? Or is it a relatively easy bag to get into?