.... afraid I'll have to disagree there Slannofitza, the "Skinks only" part is all about who can CARRY the banner, not who can benefit, so it can't be carried by a Scar Vet, but it can be carried by a Skink Chief (as was the scenario mentioned in the original post) and the Skink Chief can join Saurus units, thereby giving them the benefits.
lol beat me to it, so I'll just add I concur with thereal87 and leave it there!