I'm with Frax !
Done it at TPF a few times & not an issue IMO.
Absolutely NO different than taking our NIB/NOB Pins TOO the show after buying them and paying for shipping (not to mention having to WAIT for that "SPECIAL" title to FINALLY ship).
SO save on shipping, get a discount AND get that Special "Must Have" Title early !!
My 02ยข
Kim