I haven't heard of Bowers using a new Technique, I didn't see mention of it on her website, where did you hear about it from? I note her site seemed a bit out of date to me, and I would be fascinated to see more people adopt non penile inversion techniques.
As to why she isn't popular here, if I were to go to Thailand and get the non inversion technique, I would probably choose Chettawut whom certainly is less expensive something like $12k for the procedure probably less than $20K to do the flight, hotels, etc. If I wanted someone close I would certainly choose Dr. Christine McGinn, who I could ride the train or drive my car to, and has a similar inspiring background as Dr. Bowers. Not to mention I have been impressed by both their results. The results I have seen from Dr. Bowers are good, but I wouldn't have any reason to fly thousands of miles to California to pay more, sure Thailand is thousands of miles too, but I would save some, PA is only a short ride from DC and if I decided I wanted revisions and didn't want McGinn to do them there is always Dr. Leis also in PA.
My point in all that mess is, there isn't really a compelling reason for me at the very least to look into Dr. Bowers. I am sure for many it is the same, California is a whole world away on this coast.