When I got on the boat for last year's Spree4All, the first couple of comments were "Where's your sidemount?"
Huh? Isn't Frank one of the more vocal opponents of sidemount? A few searches on scubaboard will show that to be the case.
I do both sidemount doubles and backmount singles, but I wouldn't dare bring a sidemount rig onto that boat. I've never had a problem on other S.E. Florida boats, though. Of course, that's when I was getting accustomed to sidemount and needed the practice. Now that I feel like I've got everything dialed in and comfortable, I only sidemount when a dive plan calls for doubles.
Also, it's funny you mention DIR. I think sidemount is one of the main improvements that UTD brought to DIR when the GUE boys were stuck, right?