HI susan,
That schlumpf is really good, I've got one on my QV.. After about 3k miles I've learned that those buttons will pop off . Its likely worth ordering a spare set and the tool to replace them (it takes a 1.5mm long stem allen key and a special tool)
http://www.utahtrikes.com/PROD-329.html I was about 200 miles from home when I found this out .. and the "internet" lore around how to do field repairs requires a 'M3' bolt and a wooden plug. Trying to find an M3 bolt in the US is an exercise in splunking through various hardware stores and hoping that some one refilled the inventory and someone else didn't steal them .. For me, it ended up with a uhaul rental and a drive home.
I now carry two buttons and the tool