Bugman's Glow vs Dwarven Skin

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Dwarven Skin is more muted than Bugman's Glow.

Can I use Dwarven Skin instead of Bugman's Glow?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dwarven Skin is more muted than Bugman's Glow.

Can I use Bugman's Glow instead of Dwarven Skin?

The same difference applies the other way round: Bugman's Glow is more saturated.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.