The weapon isn't that bad.
The only thing I dislike about it is that despite its higher damage than the rest of the sloshers it isn't a one hit kill.
Although if it was, then it would just be a blaster.
However, I find myself often splatting the people who use it.
it requires good accuracy to perform well. If you don't have good accuracy / aim to land those direct hits regularly (such as myself rip) than 9 times out of 10 you're going to lose 1v1's
it is decent at picking of enemies that are distracted by another teammate, but a lot of other weapons are also good for that .-.