But then you're relying on the twitch system again. If you remove them during -o, then there's no point in storing it during +o. $nick isop would work just fine in that case cause +o would be required for both cases.
The workaround here is to look for a single +o and store it for eternity. This would work in cases where +o is not set to users who are supposed to have it on twitch.
Twitch's irc has been known to have had this issue for periods of time.
