FullAuto,
I've sent a dozen emails to Para's customer service and always gotten some reply in 24 hrs or less. They are not doing any "custom pistolsmithing" untill they get up and fully operational in Charlotte. When they do get there, I intend on sending my LTC in for some work. Last I corresponded with them they said by the end of this year.
In the meantime, they should be able to answer the question on a grip safety. May not be a drop in part and need some fitting.