Of course!
But you never know when Leifr will fumble on a knowledge check and die from overusing his brain.
And in that case, I... don't really have a back up character. I have plenty of ideas, yes, but most require magic/technology to be a little more advanced so they wouldn't be as usable in this era.
In all seriousness, if Leifr were to fall here my next attempt might be a cleric / tank (again) with some magical knowledge (to heal / cure).