Glider has all of us using Pledge for just about everything. I hope this thread doesn't turn into Pledge for suncreen too. Get some SPF 45 and ride. Just kidding.
Since one of its active ingredients is silicone and among other things silicone has a UV rating and is used in the automotive industry to keep the sun from drying out things such as door seals I would have to say yes.
I don't think it will have enough UV protection to do any good. As posted before it's made for inside. It's good for a quick clean. I would still use a good hand wax for the UV.