Thanks Chris.
They did say that Paramount "will be on all major platforms", so as Spike is on Freesat, I think that Viacom must regard Freesat as a major platform and that it will be on the Freesat EPG.
Ps, Dave is now broadcasting FTA ahead of it starting on Freesat on Monday, so anyone wanting to take a look before the weekend can do so via non Freesat mode