Scott...
Are you able to tweak the attack and the slope. Reason I ask is I needed to create the sliding synth/brass piece for the bridge in Elton John's "Saturday Night's Alright for Fighting".(the Dm at the end of the C-Bb-G)
It worked out very well.
Running with that concept, it would make sense that you could create or come pretty darn close to the slide effect of a Steel Guitar. Obviously nothing will truly replicate an actual steel guitar, but....you might come dangerously close!

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...L