The Mora will probably break as it is only a thin carving blade. I have the Bahco wrecking knife SB2449 for field, but with the curved end rather than the chisel end. It is cheap, strong and works perfectly.
If you go to Greenman bushcraft they've got the chisel knife and a matching bushcraft knife by Hultafors which are reduced to ?6 each. Advantage being the sheaths are interlocking so you can stick both on your quiver/belt at the same time and use whichever suits the job at hand. I bought them when they were full price - still a bargain. Couple of years on and still going strong. Haven't even used my newly acquired bayonet yet.