This thread was obviously posted after their first CD, which did seem to lean that way. However, their latest CD, Shadows, is very dark and suggestive of one leaving his faith, giving doubt to Ryan M's exuberant response above. it should also be noted that neither Flo nor Herbie have made any public statements of faith since Sinbreed's inception, either via FB or interview, at least not that I've seen.
With that in mind, I would say that Sinbreed, the band, is not a Christian Band, a la Seventh Avenue, Harmony, Darkwater, Theocracy, etc. Those bands and others like them are very open with their faith and their lyrics make it quite clear what it is they are singing about.