Hi Steve,
Personally, I like it! It is a nice modification that still retains the best part of the pen's character, yet presents something completely different. The problem is, many people will not view it as a modification, but rather a mistake - they will just think you put it together wrong! [:0] What do people know anyway!!! The only other problem is if there is some reason that the nib should point up while in your pocket. I don't htink rollerballs leak like fountain pens might, but it's something to think about.
Scott.