Your only risk is the $5 for the rhizome. The topsy thing can always be re-purposed for tomatoes...
or "Tomatoes "
If only produces a couple of ounces, then make one batch with all of 'em an call it your windowsill IPA. Plus, if the plant struggles along for a few years, trying to grow, but hampered by harsh conditions, then it will be ready to take off running when you eventually move to a place with dirt.