Maybe they are staminant, it's tough to tell from the pix. Why not grow them out for awhile to be sure? It won't hurt anything, and you may keep from making a mistake.
To be more blunt (so to speak) how many Lambsbread cuttings have you seen before?
Well why would he give you a male clone, or did he not sex them before he took it.....They look male to me actually but it is hard to tell so dont take my word