Paully - have you trialed LSU Tiger? For me in Western PA, which also lacks a long hot growing season, Tiger was a better fig than O'Rourke in the only season I have had both to compare. Tiger was a little larger, sweeter, and just as productive. My ICON was in it's first year and did not produce much until very late, so cannot compare it yet. My Tiger started ripening just one day later than Florea and a few days ahead of O'Rourke. The above were potted plants, O'Rourke in 3rd year, Tiger and Florea in 2nd year, so things may change as they get older.
Just to add a little history from what I have read on this forum - what fignut posted above is correct. Ed O'Rourke's stated goal was to create an "improved Celeste" fig. Celeste was used as the common fig (female) parent for most of his crosses. Over the years, and I think especially near the end of the program, a number of the multitude of figs under trial were passed out to get the opinions of others and, I believe, to keep them from being lost when LSU ceased support for the program. Some may have been taken without knowledge of those running the program. Many of these LSU program- derived figs being passed around in those days were known as an 'improved Celeste', not as an official name but as a descriptive term. LSU later selected one of these, which they felt was one of the best, and released it as "O'Rourke". The improved celeste 'Not' referenced above, I believe was from a known nursery and being sold by them as "O'Rourke" but was not the same as what LSU released as "O'Rourke". Some fig experts on this forum opined that the nursery involved assumed that the improved celeste variety they had was the same improved celeste variety released by LSU as "O'Rourke" but it was not. Then, on this forum, people began calling that improved celeste variety "Improved Celeste O'Rourke Not" or ICON, which is a good fig, felt to be earlier than O'Rourke. I believe that is a better name for it than 'Improved Celeste Not', as it is truly an improved celeste from LSU breeding program, but it is NOT truly O'Rourke. Hope this does not add to the confusion. :)