ETTR/HAMSTTR, UniWB, Flash & Pro Gigs

Hello folks. I would like to know (and discuss) who is and isn't shooting pro (i.e. paid) gigs (principally live event type situations like concerts, engagements, weddings, etc.) with ETTR/HAMSTTR, UniWB, with or without flash and what your reasoning is for doing so.

My initial thoughts seem that one could shoot with ETTR/HAMSTTR and UniWB on a pro level, but that it would become much more difficult when adding Flash to the equation. It would seem much more pragmatic to just use AWB and probably even do away with ETTR/HAMSTTR exposure style while shooting events like weddings, but I have a particular fondness to details and I want to maximize the information that I have to work with in an exposure and am interested to learn from the experiences of others, of how I can incorporate the techniques of ETTR/HAMSTTR, UniWB with flash on location.

Just so no one feels left out, I wouldn't mind hearing from those who aren't doing paid work as well. I'm simply considering a paid situation as an added variable to balance, since there is an added pressure to do things well, but also provide good value to a client by doing it quickly too.

I'm not a pro, but I'll jump in anyway. I don't use UniWB, but I do use ETTR/HAMSTTR for virtually all my shooting. The only difference between ETTR/HAMSTTR and "regular" shooting is making sure that you push the histrogram as far right as possible while retaining highlight details, rather than letting the camera's metering/exposure system position it based on its assumption that the overall scene will equate to 18% gray reflectance. My normal means of doing that is using spot metering to meter on the brightest area where I want to retain detail, and setting the exposure based on that. I almost always shoot in manual, but the same thing could be done in Av or Tv using exposure compensation/exposure lock. It would obviously be more difficult if the light is constantly changing, in which case you could let the camera handle the exposure and try to set an appropriate "average" exposure compensation, but it seems to me that you'd have the same exposure issues in changing light whether or not you were shooting ETTR/HAMSTTR. If using ETTL flash I'm not sure there would be a difference between "regular" shooting and ETTR/HAMSTTR shooting, since the flash exposure is set independently of the camera exposure if you are exposing the camera for ambient, and if you're planning to use the flash to control the entire exposure, FEC will take care of the ETTR/HAMSTTR piece.