At this time, any roller that lets me "see the work" (see the individual rolls if I check) is fine. I know some are spoofable. I'll live with it unless somebody is consistently above average in their rolls.
I think, as I write this, that we're only waiting for Butcher to get there (5 minutes late, if I'm reading his post correctly.)
I want to take a moment to mention "If I'da known" actions - like these perception rolls I just had you all do.
What some of you will notice (Boris and Rafa for sure, others after I check your sheets for knowledge) is that the trolls and orks are wearing different gang colors. You all also notice that everyone's a bit tense.) Now, I can't think of anything any of you would change in a major way knowing that, so I rolled through the first check and down to the logical pause.
However, some of you might have done something a little different. If you have a "I would have xxx if I'd known" and it's reasonable, I'm comfortable with you making a retroactive statement in your next post. Don't edit your old post, make the comment in your new one.
If I think the roll will make a significant change in your actions, or if I feel like messing with your heads (I am a GM after all), I will stop at the roll. No ex post facto actions required or allowed.