Yeah, that's the kind of mistake that sticks with you. After a close call on a job site years back, I made a hard rule to always walk the area myself before any equipment moves. I even keep a can of spray paint in my truck to mark my own lines if the utility markings look faded or wrong. It adds five minutes to the start of a day, but it's saved me from hitting a water line at least once. That little bit of extra time is nothing compared to the mess you're avoiding.

Look, I get wanting to save time, but borosilicate can still thermal shock if you're not careful. The risk isn't about guaranteed cracks every single time, it's about those weak spots you can't even see. You might get away with it for a while, then one day a piece you put real work into just goes. It's not worth the gamble for the five minutes of patience it takes to pre-heat properly.