Have You Ever Done A SWEAT EQUITY Deal!?💦💸 How did it turn out?🤔

I have an offer from a VC firm to join as an advisor and assist with some of the pain points, but they want to do it as a sweat equity deal until they finish closing their financing or we find another partner and they contribute as a follow on investor

I already have my counter offer in place, but would appreciate suggestions (finance background myself)