Yeah, she actually asked specifically for me because she saw my work via my brother on Facebook. My plan right now is to use the X-Pro2 as the main body with my 35/1.4 and use the X100T as the second body, if I get a third body I'd use either one of my MF 50mm lenses on it (I rarely shoot longer than 85mm equivalent). The venue is small, so I'm not super worried about having a longer lens, but I wouldn't mind having a backup ILC body incase something goes wrong with the X-Pro2 (not likely).
My X-Pro2 does have dual slots, ironically the only card I've ever had fail on me though is a Sandisk Extreme Pro... but even that the data was salvaged via software thankfully.
I've never had an issue where AF is concerned with my X-Pro2, my X-E2 would hunt sometimes if the light was very low, but I appreciate the heads up/concern.
I've also never had an issue with any of the batteries I own, most are Wasabi Power. I don't see how a different scenario would change that, but I will definitely be bringing more than enough batteries just in case anyway.
As for flashes, I'll be using my Yongnuo YN560's (x3). I've gotten very comfortable and fast with manual flash and have never had a single issue with them working properly with any of my Fuji bodies (which is more than I could say for my Sony bodies). I had thought about getting the Nissin i40/i60 since it's nice and compact and adds the ability for HSS, but I'm not sure I'll buy it just yet.
I already ordered one of the Fuji Macro tubes for the detail shots (even though the bride says she is "Most interested in candids").
As for the newer sensor... honestly to me the difference isn't that huge. The 24mp sensor definitely cleans up a little easier at high ISO, but it's not a night and day difference in my opinion. I've also never found the 16mp sensors to be lacking detail. My main concerns over the body choices really come down to; do I want to spend less for the larger and more magnified EVF of the X-T1 for advantages with manual lenses (something I love to use), or do I want to spend more for the smaller body with the newer AF system and 4K video potential (I haven't made a video in a long time, but I would like to get back into it)?
As for focus assist lights, again, never really had an issue so far with my X-Pro2's AF in any light I would normally bother shooting in, but if I did the camera does have an AF assist light built in.
Thanks for the feedback guys, I bolded the biggest differences in my head between the X-T1 and X-T20.
I've read sooooo many bad reviews on Wasabi batteries getting swollen over a period of time. I've never heard bad things about Watson. However now fuji has the new gen battery meant for better heat control when you shoot 4k vid.
Metz and ef-x500 are the true HSS flash units on the market. Did I miss Nissin finally getting true HSS?????
Modern wedding photogs just spoiled. However I know majority of even many oldschool photogs admitting slower focus acquistion shooting manually vs AF. This is where you can miss "moments" shooting manual focus.
I'd still take X-T20 over X-T1. Using my previous X-T10 with aluminium hand grip with GT5000 grip tape still feels better in my hands than my X-T2. XT10 with grip is still probably lighter than my X-T2!!! X-T20 seems to be a better value even if it costs more than a used X-T1. Newer sensor with fast AF is a win win!!
For events I still would take my 5dmk3 or even my 80D over my fuji x-t2 simply because of AF speed. The more and more I use my 80D it really shocks me in the almost full frame look with extremely high IQ in a canon crop sensor.
I'm picking up a EF-X500 sometime this month. I'll be putting it through my thorough testing. I still find the fuji X-T2 to lag. I hope I'll be impressed :O
Hoping to buy another X-t2 before the summer. Or I may just buy more lenses and settle for an X-T20. I'm still trying to push my fuji more into my paid gigs but Canon is still taking it's place.
Have fun and organize your time and make notes to keep track of things you want to document ( poses/specific shots for story telling etc)