Yes, if you tried to hold your heavy armored vehicle on a slope like that in real life, with the engine revolving and your clutch gripping, you would probably overheat your clutch and make it jam. But hey, it's 2.45, everything is possible
We once tried to go just a few yards uphill in reverse gear with a Volkswagen T5 bus on a ski tour in the alps.
Well, we all sat in the thing, 8 ppl including snowboarding gear. Let's say by the time we got it rolling and going backwards uphill to the intersection we wanted to get back to, the clutch could be smelt very well inside the vehicle ^^. That's what I always remember when hanging on a slope in FH2 nowadays.