All of the force needed to push down Topre's is right from the start. So unlike Cherry MX's which will ramp up in force to either get over the bump or ramp up the closer you get to the bottom, Topre Switches require all of the force as soon as you start pushing down..
IMO, it gives the keys a lot of stability..they feel very stable as a result. It also means you're going to bottom out because as soon as you hit the point where you have pressed hard enough to activate the switch, all of required force just drops out. If that reminds you of rubber dome it should. The main difference between it and normal rubber domes are it will feel a lot more stable, bottom out has (IMO) a slightly different feel to it and the way the keys feel when typing gives you this oneness with the keyboard. Some people think it is too much like a rubber dome...I definitely think it is similar but different...