Nice name suggestion!
As far as I'm aware, males get the lanky look after they reach maturity and molt for the last time, since feeding stops being a priority for them; pedipalps also change and thats an sure sign of a mature male T. I think they are indistinguishable before that?
This one was actually pretty skinny when that pic was taken since she had recently molted . So far all of my mature T's have turned out to be females so... Maybe I don't have keen eyes ti spot the males.