I used Heather Ross Far Far Away linen blend for the main part of the bag and some Stamped by Ellen Luckett Baker for the strap. The pattern called for an O ring for the strap. I didn't have any but found some of these wooden rings so I used one of them instead.
The leather scraps were quite thin and a bit stretchy so they were quite tricky to sew, especially the top stitching. I did use a Teflon foot, but I think it might be worth trying a leather foot if I was going to do a lot of leather sewing.
This is a great bag pattern and the only change I made was to shorten the length of the strap a bit. I have already used it today and I can see it getting a lot of use.