I would say that Matias quiet switches are more similar to Topre than MX brown, but they are still different. Matias quiet switches are more tactile than browns, and have a decreasing force after tactile bump, similar to Topre. IMO Matias is more tactile, but less smooth compared to Topre.
Also a note on Matias Ergo pro: the 6 key is on right side of the split, unlike many other split keyboards that put it on left side.