Thank you both, Gary and Clive, for providing some reasons for your previous one word opinions of meter suitability.
I tend to side more with Gary in the assessment that "An incident meter has no means of knowing what it is looking at or what it is metering, and furthermore doesn't care." For that reason, if we have bright highlights which would overexpose and wash out detail in the color transparency, we end up with clear base and no details. (The same exposure with color neg would be well tolerated due to it tolerance to overexposure.) Meter the same scene with a spotmeter, and I know precisely how to expose so that the highlights will be captured best on film, and avoid the clear detailess filmbase.
If I shoot for publication, I use the one-degree spotmeter to measure highlights and deepest shadow, to decide placement of my exposure to best capture the full dynamic range of the scene and the midpoint of the range...and that might not match what the incident meter says. Futhurmore, the spotmeter allows me to determine if the lighting needs to reduce the dynamic range to fit within which is achievable on the printed page by the offset press; you can't do that with an incident meter.