This was probably one of the last Space Ork models I painted before I started using Chaos Space Marines instead. This model was painted to lead my Blood Axe Kommandoes which weren't introduced until the Ork Codex came out for second edition. You couldn't infiltrate under the Rogue Trader rules.
Now I don't even know the rules to Warhammer 40,000. But I think any units that can scout, flank, or infiltrate are great. Even deep striking seems to have become less dangerous so if I ever play 40K again seriously I'd endeavour to have units with those abilities in my army, though my army is most likely to be Death Guard or possibly Chaos Soup as they term multiple Codex army lists online.