Most tapers are snobs about gear and anal about mic positioning.
That's about 99% of the folks here. I taped a couple times with the D50 internals, but most certainly positioned the mics towards the sound source and not shirt-pocket-up-to-the-sky. If you are going to do that, the omnis in the R09/R09HR are a better option.
I understand and basically agree, but as you've pointed out, it all depends on positioning. All the venues I record at in here in Pittsburgh except one has the PA speakers overhead. If I position myself near the front of the stage, set D50 internal mics at 45 degrees, and put the recorder in a shirt pocket, each mic will be pointing pretty directly towards each PA speaker. Just sayin'.
Having said that, yeah, there's no doubt that if the speakers are on the sides of the stage or sitting on the floor, you might want to take the recorder out and somehow stealthily get the mics pointed at the speakers. I've seen people standing near the stage holding the recorder...or of course external mics in a hat is the most popular method (sorry to those that don't like this discussion being public...it's not like the hat is any secret or that there's anything legitimately illegitimate about using stealth recording technique).