Scrier's gaze is a very situational thing, Psyker's don't get up in the morning, shit, shower, shave and cast it just for kicks so they know what's going to happen for the rest of the day- if they have no justifiable specifics on a developing incident and more importantly, no time. It should just tell them that their comrades hate their mutant arse and the commisar is wondering just how many bolt shells he's going to drop in the back of their skull.
As a GM, if you just give them a free, ultra-specific outlying story arc completely down to warts and all, then you're doing it wrong.
As a player, if you have something specific to base the divination straight off-of like "Reports of enemy scouts moving on our left flank are coming in" and you do the divination and come back with a nebulous idea that its a small mobile infantry force is going to hit-run to make a distraction, while at the front you'll be hit by their armour- is a valid use and result.
Plus… as a psyker player- the Warp has been known to 'lie' and be a bit fast and loose with the truth. For those of us in league with Tzeentch, we like to think of it as a 'campaign of misinformation' :D
If in doubt, shoot it
Actually, if it worked that way (which I believe it doesn't) it would be a perfect example. After all, if Command knows the player can do that it would simplify recon tremendously, so that's precisely the kind of missions they would be assigned (they would still have to perform traditional recon, because who's gonna be as stupid as to put all their stock on the word of a dirty psyker). As a GM I'd let the squad have its bit of fun with their advantage, get the drop on the enemy for a couple of missions, and then, without warning, place an enemy psyker stealthily "listening". Now the players know a lot about the enemy, but the enemy knows that they know while the players don't know that the enemy knows what they know.
I think we're in agreement, since that falls under what I mentioned about "accounting for it" :-P
You gonna get PURGED!