I enjoy whistling from time to time, and like to think that I'm pretty good at it; i.e., it's not displeasing to listen to, unless you just don't like whistling. And, if need be, I can whistle at a pretty low volume - somewhere between that of a whisper and a casual conversation.
Being in a cubicle setting office, would it be acceptable to occasionally whistle? Perhaps, while walking down the hall, or, in the break room when making a cup of coffee? How about while in my cubicle?
Also, would this kind of "chipper" attitude be ill-received over time?