Munich, 3000+ m of LDA. ATR with 800 kgs extra tankering fuel. Runway is 50% covered with 1/2 inch wet snow. The OPF / PLOG shows company wants you to take it. Would you not?
Leaving the ATR's handling (narrow track, soft suspension, small control surfaces, criticality of loading and CG) to one side, no, I would not. That's about an 8% increase in the energy to be dissipated on landing, even if simply stopping straight ahead is the issue.
Let me put it another way: landing on contaminated runways is more than usually hazardous. Is a solely financial imperative, affecting only the balance sheet and no other aspect of the operation, and then only marginally, good enough reason to further elevate the probability of something going wrong? On my watch, it isn't.