Well, they're not terribly "scary" snakes but you really (really!) do NOT want any rear-fanged snake to bite & hang onto you...not that ANY snake that hangs on
is going to be "fun" but hanging on is the way these little guys get their venom "to the job-site"; while their venom is usually of little consequence (unless you
are unusually susceptible), there was a photo here not too long ago (don't recall whose photo?) that showed a very swollen hand from such a bite.