Dunno about you, but I took him aboard cause he is funny, and an extra hand is sometimes useful. Nothing about being a wimp.
I think having a guy on board who makes mouse droids go "SQUEEEE!!" is nice.
I think a bounty hunter with that attitude is about the only one that Skadge makes sense with.
There is no way my bh would EVER have willingly let him on her ship. Completely, bizarrely out of character.