I have to rant about the silliness of Topre keycaps. Topre artisans and keysets are just bad for the hobby, as are Topre board manufacturers that use Topre-only sliders. They further contribute to fracturing of compatibility (IDK if there's some technical or theoretical term for this). Every Topre board should have MX sliders.
I don't advocate this for Alps or BS boards to aim for MX compatibility because it's impossible or impractical , but with Topre boards, there is no legitimate reason to make non-MX sliders.