No, not significant, but a little more roll out, mostly after longer irons.
And you already know the difference in meter speed because you have the Rapture driver. If you like the meter speed of the driver that much more than your current irons, then go for it. You still will be hitting faster wedges though.
There's also supposed to be a "rental club" option coming in the next month or 2. I don't know if this would allow you to try out the Rapture Pro irons or if you would even want to wait, but it might allow you to try them out before a purchase.
You can also slow down the meter speed of everything your hitting with the GI2-S ball. This will give you the same spin as the Tour-S ball your currently using but a significantly slower meter. The GI-S will slow it down a little. You may even find your Rapture driver too slow with these balls.
Maybe you want to try out the different balls before spending the ducketts on the clubs.
Good luck.