The Richmond book has the original 1986 HOK rendering for Camden Yards (below), which looks strikingly like New Comiskey - symmetric dimensions, steep upper deck, bleachers between the foul poles, decorative latticework in the outfield, and an exterior that's nothing but ramps. Maybe they showed the Sox this version, because it's pretty much what they built in Chicago.
There's also a revised 1987 CY rendering that's essentially the same thing, but the warehouse is preserved in right field. It wasn't until 1988 that HOK began to add the retro features to Camden Yards. But New Comiskey was already under construction by then, so I'm not sure how Reinsdorf could have seen it and rejected it.
I'll be curious to hear what your source says.