I posted a discussion from Cameron Kopf a few days ago (scroll down). Now Cameron is sharing a picture and more information about his application of BE principals to his regular embouchure and his mouthpiece choice. [I commented at the bottom in brackets.]
"I'm playing on a modified Yamaha 667: Dennis Houghton mouth pipe and Lawson ambronze bell, in case you're interested. I am very happy with this horn.
"At the moment I am using a Schilke #29 stock mouthpiece (unlike the Osmun London cup in the pic). I find that the slightly wider inner cup diameter of the Schilke works much better now that I'm doing BE. It's easier to roll in.
"By the way, I am now concentrating on using RI for all registers, just over the past couple of days, and am seeing good results. My particular challenge now is to get the second line G on the staff to open up, both in sound and for tonguing. So I am now working on opening that note up with sustained tones and faster tonguing.
"Like you, I feel more comfortable with RI for most of my playing needs, but RO exercises are very important to do regularly to keep the RI muscles properly balanced."
[Thanks, Cameron! I don't really understand how & why RO works, but I know it does. One trumpet player who's been studying BE for many years tells me that RO makes RI possible. He says he does RO so he can do RI. And, many, many horn & trumpet players report HUGE improvements from playing RO. One pro trumpet player Jeff taught, struggled with several years of stagnation. He took off like a shot with RO alone so never bothered with RI. Go figure. Some horn players think they don't need RO because they already have a low range. I always tell them RO is not for the low range; it's for the whole embouchure. Whatever develops the whole embouchure, develops range in both directions.]