I for one use both and often times switch in mid phrase and have often fooled players of what method I've used. I believe knowing both is important and very useful as each has certain advantages in some things that the other can be tougher to do.
Many LP players have a tougher time adjusting to TB because they generally don't ahve their mouths opened up enough as well as the harp no being deep enough in their mouths to use it to their best advantage, and this is especially true with players teaching themselves and on top of that, they tend to be very rigid with their embouchres and the need to be TOTALLY relaxed physically, including ALL of their facial muscles, is CRUCIAL to make any and all necessary adjustments to do ANYTHING and that's something many of those players have yet to learn, as when they teach themselves, they tend to force EVERYTHING to happen, which is the WRONG approach and they only make things harder for themselves.
There's a 3rd method, which is the U-block, which I still haven't mastered yet and is probably the least used to my knowledge and for many, the toughest of them all, and it's great for getting very unusal chord voicings on a chromatic, which is what Norton Bufallo had done. ---------- Sincerely, Barbeque Bob Maglinte Boston, MA http://www.barbequebob.com CD available at http://www.cdbaby.com/cd/bbmaglinte
this topic has really had a lot of mileage on this forum-I have no doubt that mastering both LP and TB gives you an advantage in playing but there was a prime example of a brilliant player in todd parrott who lip purses only so he must be doing something right-it seems I read that howard levy LP always-there is just no right or wrong answer you make your own way