The spinner actually works quite well, but it is only designed for touch only, for mouse and keyboard doesn't work so well.
I use this control in a windows, osx app, for when i'm on a touch device, very cool, but on a desktop, not so much.
However, if you could select a column in the spinner (have it allow focus) then allow a keyboard click, or mouse wheel, or arrow up/down keys, now this control works on all input platforms.