This is the exact opposite approach to what I normally take. I try to hide my gear, use only the gear required, and it stays protected at all costs. I appreciate the volunteer work though. It is surprising that you haven't gotten flamed on the volunteerism piece. So many photogs complain about people taking food out of their mouths. My perspective is if someone can do as good a job as you can for free, then you are in the wrong business.
As a self employed business owner (IT Consulting), I always try to take the high road. There is plenty of business to go around and I don't have time to waste with negative thoughts and comments. If another IT guy wants the business bad enough, he can have it. I just try to provide good service and keep my clients that way. If a client doesn't want my services, I'm not going to beg or try to hold on to them. It's just not worth it. Most of my work is obtained by word of mouth and referrals anyway.
So, with that in mind, I sort of chuckle about pro photographers getting angry about volunteer competition. If the recipient of the photos could afford to hire a pro, they wouldn't use a volunteer. And if the volunteer is as good as or worth the same as the pro, so be it. They still probably don't have the money anyway or they would offer to pay the volunteer or just go without the better quality photos.
I think many pro quality photographers are no different than other tradesmen that offer to do pro-bono work. And you don't usually hear about other electricians, plumbers, carpenters, roofers, IT guys, etc getting upset about losing that business. What's the difference? And how much revenue is really being lost anyway?