New member here. I have two Brig Tacs, so at some point I did buy it again (actually, I traded for the second one but similar idea). However, after concealed carrying one for a year, I would say that the Brigadier slide does not provide any real added benefit. It is heavy, but doesn't bother me. I carry it in either a Mastermind Tactics AIWB (now discontinued) or JMCK AIWB 2.0.
I also don't particularly like the Wilson rear sights. The parkerized finish is not as durable as nitride, so it gets distracting shiny spots quickly that need touch up. I also do not like the plunge cut where there is a circular flat area of the rear sight that contrasts with the serrations. I wish it had a flat serrated surface like the 10-8 style rear sights. I may just get the flat, square notch version as I'm neutral about the U notch. I have this version on my regular 92FS and like it a bit better although wish it was nitrided.
I do particularly like the frame checkering, 92A1 style trigger guard reshaping, 4.7" crowned barrel, traditional G levers (instead of the new G conversion kit you see on the LTT Elite or M9A3 G), and the Wilson regular thickness VZ grips. At this point, I'm debating switching my carry to a Cent Tac or getting an LTT Elite. I'm a bit conflicted with the Cent Tac because although I like the regular weight slide, I don't really need a shorter slide and prefer the full length 92 slides. The other thing I thought about was swapping a Vertec slide onto my Brig Tac, with better sights such as the LTT Spartan or some other combination. However, most people don't get a WC Beretta in order to turn it into a Frankenretta, so I do feel a little funny doing something like that.