Using my walking foot (which is a cheapie from Amazon) and remembering not to pin the vinyl, I was very happy with the results of my first vinyl strap!
I can honestly say it was so much less difficult than I imagined. Isn't that how a lot of things are? Much scarier in your head than in real life.
The pattern is the Sandra Saddle Bag by Swoon Patterns she was a fairly quick sew, with fairly straight forward directions. I was able to complete it in about an evening. The fabric is an Art Gallery print from the Jungle Ave line by Sara Lawson and the vinyl was from fabric.com.
Now that I've finally conquered some of my fears with vinyl, I am anxious to continue to use it in future projects. Happy Sewing!