That is definitely a jack-of-all trade lens (but master of none). I did try it at one indoor event, and had to really slow down the shutter speed, so it was only usable for me for stationary shots. IQ was good, but not as sharp as either the 70-200 or 135, but definitely usable. The extra reach may prove useful to some, but if changing lenses as needed is not an issue, I'd go for the extra stops of light with the 135, and stay with constant f4 zoom.
Again, photography is about choices / compromises and planning ahead. No one (affordable) lens exists to cover every situation. I guess that is why my camera bags have become so full.