Hi Fleeb.
I use BB 2012 with the surface pro and i have not had any issues with seeing all the buttons clearly,due to space restrictions disk wise i only installed about a quarter of my realtracks collection.
As for performance it works well on the surface ,i have installed several vsti's as well to use with BB and it works great.
I know the 2014 BB has a different look but i would assume it should be easy to navigate on the surface.
Theres always a google search option to check of course..

Hope this is of use.
Cheerio.