I have to agree with Bob. There may be differences that could be measured with some scientific instrument, or shown in a wind tunnel, but what can you SEE or "feel" when flying the model?

I've done a kabillion experiments over the years with models, and I think that at the Reynolds numbers we usually fly at, these details are negligible. However, you could make a plywood plate on the wingtip, and try attaching different configurations yourself, and see if you agree. (Wingtips aren't too time consuming to make.)