The chance of major adblockers adjusting their functionality just because Twitch has developed this one "new" ad product are insanely low - especially if you consider how most adblockers work in general.
SureStream mixes ads into the the HLS stream/m3u8 playlist using the SCTE-35 standard which itself is used to signal ad insertion into transport streams. (also used by Google Ad Manager and Amazon's live video processing service)
Reasons why you might not see ads:
I've posted the most efficient way to block new SureStream ads in the other thread, just reposting it here for visibility.
This chrome/firefox extension will filter/edit the m3u8 playlist/HLS stream to remove any advertisments detected through SCTE-35 flags.