Good old 2010 and a great tip! I think you meant the equations button, rather than the symbol button but we get the idea.
If you are using this in a report, rather than just a table of numbers you will notice that it drops the font size down by between 0.5 and 1.5 points so if you are very fussy about preserving your line spacing you will need to adjust the formatting of the surrounding figures accordingly.
For a font size of 11 or 12, I needed to adjust the surrounding figures to 10.5 to match.