Every of them were tested, at least one 3s pack with my skyline. I don't know if my driving style is that comfy for the electronics pr there's a different reason.
In your case there probably will be a shipping. And then there's a risk of burning an ESC with not careful enough driving. (I ran exact your one with 3s 5000mah 65c battery, I have no clue how the hell it can handle this, but die using 2L motors in other case)
The only thing I wasn't playing around is 2s or 3s. Always 3s and no problems. From this judgement comes out the problem-free use of 2S. Surprisingly, all the damaged bricks were damaged from use with similar 3S batteries.
As far as I know you wanted to use it with 2s, maybe yours is safe?
I got a sample, but as I said I can't just put it inside an actual version of the brick