I' ve shot off the string with a scott mongoose under a nock secured by a Tru speed nock, on a 30.5" ata bow at 28" draw, with no ill effects whatsoever, Arrow is secure, even on let-down, and bow is very accurate. Serving is also in great shape.
I' m currently getting ready to switch to a Gator Jaw release which mimics a string loop only with a straight behind the nock pull back, but it will still be off the string