Hi Starship, Buzz here. I'm a Line Mechanic , and aspiring (perspiring?) taildragger pilot on classic airplanes.
45 degrees worth or crab at touchdown? Well the Lump's landing gear looks beefy enough to do it once.... I'd have to ask how it was on the prototype 747 that's stored at BFI (Boeing Field, Seattle)
Consider: all that momentum being applied when the rubber meets the runway. When it happens at work (UAL) we get to speen a few hours doing a "high sideload inspection", which doesn not cause good feelings between Mechanics, and the guys who brought the hurt airplane to them.
Consider #2: the rubber dosen't feel like staying on the rims (all 16 of them) when you put that much sideload on the landing gear. Most stations don't keep a plethora of tires on hand..... and once again consider the Wrench Benders who will spend the next few hours jacking up the axles (one at a time for safety) and replacing the rubber.
Consider #3: when i fly a 1946 Aeronca Champ and touch down a bit crooked, i get a good look at the edges of the runway. She flew down final approach nicely enough crabbed over to compensate for the wind, but once the wheels meet the runway you've introduced another force that isn't planned on. SO the airplane darts to one side or another. (with an Aeronca, we can land on the grass too) Similar idea in airliners, and it looks so much more professional when you make a smooth arrival.
Conclusion: Yes, it might withstand a severe crab once or twice, but it WILL cost you.
Buzz Fuselsausage: Line Mechanic by night, DC-3 crew chief by choice.