yea getting your purple bastard sword replaced by a grey bastard sword is lucky. lucky for solstice.
I would say getting the weapon of your skill is pretty lucky....to say picking up a battle axe or mace or any other non skilled weapon that could be around....let lone picking up a weapon of any sort immediatley after dropping your weapon.

Of course losing your weapon sucks...but using a weapon that you are not skilled in is worse then going at it barehanded at times...and most of the time you end up dropping it soon after due to the lack of skill.
Being able to pick up a weapon that you are skilled in loses some damage power but your ability to use it is all the same.