Has anyone called Sig yet to inquire about the Sig Custom Shop ambi safety retrofit? I had planned to purchase a new P238 for this feature (instead of an aftermarket swap) until I realized that Sig's press release announced that the Custom Shop would perform aftermarket upgrades.

I can't imagine that anyone has had this done yet, but if you've called, what was your experience? I've never had to use the Custom Shop before -- what are their turnaround times like?