If your deposits are insured, then sure why not? If Japan's able to enforce deposit insurance on licenced exchanges, surely a Gemini-backed entity must be able to do the same, especially if they're soliciting your deposits.

2% annual interest is not worth the risk, as pointed out. If you REALLY wanted to gamble, there is a service here that lets you earn about 4% annually (compounded), crediting you daily, and funds never locked. Hint: They're in Gambling section and are one of the most read and responded to threads. They've not scammed anyone for 4? 5? years but I wouldn't store my precious savings for that kind of interest. A little here and there, sure.