Yea i got about 900k - they have since added a "Gift usage" section under settings/ My Quota

The kimi.com interface also seems to indicate they can be used there (the badge to say its using gift quota is there for me).

However under Usage Details/Gift Quota it seems to indicate that it is consuming it via kimi code and sure enough my usage is reflected there from kimi cli. Odd and a tad vague