The Custom 24 se is a sweet guitar IME. I thought the 85/15's were excellent. The TCI versions seem even better but I have only heard the demos vs the standard import 85/15 models but they seemed to be a bit more concise sounding. Granted the sort of tones we both prefer are probably radically different.
It would be a step backwards in my eyes. Owned quite a few LP’s and IMO the 594 kills them. My burst 594 sounds like a killer LP to me. Was just thinking of something hotter in there, but used it tonight at a gig and sounded killer, so might leave it alone. I feel like the 594s don’t sound like a PRS to my ears, compared to the CU 22/24s