In the Czech Republic, honestly, Novak is not played very much. The one piece that does come up with regularity is the Slovácká Suita... BTW, "Slovak Suite" is a mistranslation, it implies the country Slovakia, while the correct "Slovácká" refers to "Slovácko", which is a region in Moravia, in the east of the Czech Republic.
The other piece that big orchestras sometimes play is "O věčné touze" (Of Eternal Longing), which sounds somewhat like La Mer with its whole-tone-scales and sea hymns.
In conclusion, Novak is fine, but one must never assume that just because he is recorded, that he is played as well.
Also, the correct spelling of his first name is Vítěslav (Viteslav).