>if I were a Customs agent and I saw a bunch of labelless cigars

Just to put on my snooty ....... hat for a minute, they're not 'labels' (those are on the box) and they're not 'wrappers' (those are tobacco leaves). They're cigar "bands"

...and lots of non-Cuban cigars come without bands. In fact, I'm taking a handful of non-banded Hondurans to Vegas tonight