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I have 2 scopes side by side but only use the one pionting model. Whilst there might be a very small difference between the models, I don't see how it matters much. I point my scopes using the smaller scope and it's T point model. This will place my target pretty close to the centre of a frame anywhere in the sky. I have my spectrograph on the larger scope (C11) and the target slit always corresponds to just above the image centre of the camera on the smaller scope. This is perfectly adequate.
Doing a T point model takes at least an hour for 60 points. Why would I waste more time on this than needed?
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