Hit about 120 balls across all of the above clubs, the majority with the CBI-9/AF-Tour.
Shaft was playable for the near term without tipping for the 4 iron. I am assuming that is the equivalent of a soft step. Trajectory was controllable, but there was a loss of distance the lower the flight. Natural ball flight with the 4-iron was more piercing than an arch but I would not not quite classify it as piercing either. Comparably, it had a little more consistent distance than the other combos I hit.
The feel was more elastic than glass but nowhere near the rubbery feeling of the OT Tour.
Might see what a hard step on the CBI-9 80 plays like as that has more long term use for the investment in a set of irons. Not sure I could play the next flex down, as it stands I am a little concerned over a sub 90g shaft.