It's done. SA/SO though I did the SO only out of concern that there might be weird new enforcers. Seems to have worked out as a number of NPCs turned out to not enforce the suit (the assistant anywhere in the bar, the waiter and businessman on the roof and, surprisingly enough, Giggles himself). Took my time, KO'd before committing to kills, and so forth; the ET doesn't punish that and this made it quite easy. Kong's bodyguard kept trolling me by walking right up to wherever the assistant was to interfere with coining her, but that was just bad timing on my part and all it took was persistence at that point, there wasn't any way I could fail.
Wasn't taking any chances because it was my only shot at Blood Money w/ Gloves and happily it all worked out and I have the best default variant now. Looks so much nicer than the Signature. Plus Summer w/ Gloves which might be the worst of the area-specific suits but at least I finally got to fill that gap.