Earlier quoted context omitted.
This is a logical fallacy, and a bad one as it generally doesn't bear out how you're implying in the real world.
The labeling of "slippery slope" as a "logical fallacy" versus a "consequentialist logical device" is becoming quite the political statement. Check out the history and the talk page of the wikipedia article for slippery slope. For the record, I disagree that it is a logical fallacy in all cases.
Isn't that ambiguous?
You could mean:
> It is not a logical fallacy ever.
or
> It is not always a logical fallacy.
I suspect you mean the latter but some might intepret you as meaning the former.