[thedjinn]

You can still do that by sending raw midi data. Just a note immediately followed by a pitch bend.

Something I still wonder though is how serious this microtonality thing is. Is it more of a gimmick or it there a serious demand for it?

[nitrogen]

Some dubstep I've heard actually has quarter tones in it. If you find that everything you come up with on an equal temperament scale is boring and familiar, using different tunings and scales might be a useful next step to unlock creativity.