I would never use the convict gunslinger over Nino, ever. For the extra SS I would rather be able to get 6" extra range and a CB of 9 with the ability to ignore cover and minimize forest issues. Also, if he does get roped into combat, I think he has a better shot of getting out of it.
I want to put Samael in my list. Not sure he's an auto include, haven't used him yet so I can't comment. But Francisco is the MAN! I will never not have him in my guild list for any reason, he does everything well except take a hit, which can be managed with smart play. I've had him take out masters in a single activation on a couple occasions.
I currently use Perdita, but I want to try Lady J out with a contigent of the Ortegas (probably Nino and Francisco). They are 12 SS of pure awesome spank time. :marshmell