No, if done properly, and set up with the turntables, the spring loaded wheels would make them smooth (well, except for the bad transitions, and the poor train design of the SLC in other ways).
And e-man- Vekoma makes the SLC, not Arrow, their corkscrew rides aren't even as good as OK, and there's no good reason they can't change their track- they've done reprofiling work on a few of their coasters since the merge.