Hi Anthony - the difficulty of relative tolerancing with the sweep is that your case needs to be relative not to the bounding box around the entire curve being used (as was the case with Trim) but instead around the smallest sub-segment within the shape.

That has some potential to possibly make an excessively tight tolerance in the case where someone inadvertently has some tiny micro segment within a profile that they did not really even know about.

I'll take a look at it, but it's a somewhat more complex case with more potential side effects than what I did for Trim.

- Michael