Thank you guys! On a whim, I ended up grabbing an S2 Singlecut with the "Pattern Regular" profile. The "Regular" definitely feels a tiny bit larger/rounder than the "Thin". That said, it doesn't feel "huge" at all, just slightly fuller throughout, sort of like my favorite Jackson Rhoads neck if it snuck in an extra Twinkie every once in a while.
One thing that annoys me a little, especially for a "USA" model...it's spec'd with a 1/32" narrower nut than the "Pattern Thin" profile, yet the width of the actual fretboard at the nut is still 1-11/16" (1.695" measured).
PRS used a 1-21/32" (1.660" measured) nut, presumably to give it a narrower feel, but the result is that the sides of the nut aren't entirely flush with the sides of the neck. I thought I was crazy, but it seems others on the internet have noticed this, as well.
So, the "Pattern Regular" and "Pattern Thin" profiles are both based on a 1-11/16" nut width, regardless of what PRS marketing states. I'm not complaining too heavily, though, because it seems to combine the best of a slightly narrower string spacing with the fuller in-hand feel of a true 1-11/16" profile. That said, they could easily have had the nuts made slightly wider for a better fit and finish without changing the string spacing from that of the narrower nut. Guess PRS is getting cheap in their old age, LOL!