How reliable are scout reports?

[Endoperez]

ceremony said:

There are no commanders with Glamour but without Stealth. Glamour gives a unit/commander an automatic Stealth +25, as well as the Glamour advantage of being unseen in friendly provinces.

I thought Glamour only gave +25 Stealth if the unit already had Stealth. One of Bogus' group has Glamour, for instance, and I don't think any have stealth (but I could have overlooked that as it doesn't come into play). Similarly, the Gnomes recruitable from some rare site have glamour, but might not be stealthy. And I think the mercenary Air mage has Glamour (hmm... it might've been that he just cast Mirror Image).