Someone's not clear on the policy... I just re-read the memo, and we'll be adopting the same policy as on mainline. If we run out of space and your bag fits in the sizecheck sizer, we'll tag it with valet tags. If it doesn't, we'll tag your bag to your final destination where you'll pick it up at baggage claim.
And on another note, we're supposed to begin collecting excess baggage fees for those customers whose carry-ons don't fit in to the size-check sizer and that are gatechecked... SkyPriority customers should receive a priority tag on gate checked bags.