"Win" is hard to define here - this is more akin to "rent to own". Terming the cherub as the lesser of two evils is still, well - not ideal long term.
Unless you absolutely, positively will be upgrading within 6 months (and by upgrade, I mean a substantial upgrade) you're really better off sticking with a pair of clownfish.
Honestly, aside from maybe one or two exceptions I've never figured out the allure of tangs. They're bonafide ich magnets and have to be one of the dumbest fish you could potentially put in your reef.
My ocellaris take up use a lot more space than my cherubs ever have. Im not sure why people are so ready to put them in a ten gallon tank.