You're right, but this is also already mentioned within the last page of the thread. Please do a bit more research before posting in the future. Thanks.
@ Hour of Twilight multiple cloaking
Last sunday at a failing boss try our paladin tank tried to take Hour of Twilight with his bubble while under the effect of the debuff from the previous Twilight and he still got one-shotted. I know this needs confirmation (by a rogue) but since bubble also uses an immunity effect like CoS my guess is that cloak won't save you as long as you got the debuff.