Windows Phone leper colony reporting in. I got a bright idea to take a spreadsheet that I use for tracking my workouts and uploading it to skydrive so that I could punch my workout in after I finished. It turns out the mobile version of Excel doesnt support a number of formulas and macros like the desktop version does. I think i read that Excel for Office on RT will have the same limitations. I will probably end up getting the ultrabook version of Surface (sans keyboard) for this reason and for pen input for OneNote.