If the sole reason you are looking for a CAPS lock function is for the purpose of typing a word in all caps, (I suppose that would be the only reason wouldnt it?
Type your word as you normally would just hold each button as you type for about a whole second and a half. As you hold it you will see the letter change from lower to upper case.
A little time consuming yes, but beats hitting the # sign inbetween letters.
Plus a better one-handed way to type IMHO