There are three basic types of ghillie brogues. (1) Those worn by the military and civilian pipers, (2) those worn with civilian day wear, and (3) those worn with formal evening wear, either white tie or black tie.

Wikipedia does not differentiate between these shoes.

Types 1 & 2 tend to have a pebble finish, thick soles, and are of stout construction and therefore fairly heavy. They are not suitable for formal evening wear.

The third type of ghillie brogues are of a much lighter construction, and are usually made of patent leather. They are more like a gentleman's evening pumps, although still cut and styled like the more rugged day wear ghillies.

When attending white or black tie events in a kilt, gentlemen's dress pumps, or any other low cut formal evening shoe, may be worn in lieu of "evening dress" ghillies, and are to be preferred over wearing heavier, day wear shoes of any sort.