Just a thought but again if the sidepull will work at the proper lower location the fitting is obviously designed to handle the load and the cable routing would be far nicer at that location as long as the side arms do not rub the rider's legs due to sticking out a bit. Score a point for the center pull caliper on that count.... and probably a very nice reason for keeping the center pull option on the rear just for that reason. Especially if it cleans up well.

There're nothing at all wrong with the idea of a mixed set of brake calipers you know. There's some neatly done sidepull installations shown here but IMHO none of them are as neatly integrated as the original center pull option. In my case I went with the side pull for the front to simplify the front end and be able to adjust the stem height easily between various riders. For that use the side pull and a slightly overlength housing makes sense over the center pull with the need for a fixed location cable stop.