Paul Farquhar
Legend
It would depend on the length of the spear. A rifle with a bayonet attachment is basically a spear, and that is manageable. But that takes me back to the ubiquitous ten foot pole from first edition.You can sheathe the sword and free up both hands
It's going to dangle a bit annoyingly, but nothing major, but with a spear I see no other way than to climb up and have someone else pass you the spear afterwards, but only if the climb is short enough for that
I wouldn't want to climb with the weight of sword and shield. But the real difficulty would be armour - imagine trying to free climb in full plate! The boots alone would make it impossible to get a grip.