I’ve worked with glass-filled PP a lot, especially for outdoor enclosures. From my experience, embossed text usually holds up better over long production runs. There’s less tool wear, and it stays more legible as the tools age, especially in matte finishes. Engraved text can start looking shallow if there’s any flash or degraded tool definition.

If your text isn’t taller than 0.3 mm you should be safe from embossed features hanging up or causing witness marks on matte surfaces. Draft angles help too. For matte finishes, you actually get slightly better contrast with embossed features, especially with shadow from sunlight. Just make sure they’re not on complex geometry or tight corners. Keep them on flat or gently curved areas.