"There is one thing I forgot to tell you - I'm not left handed" - The
Princess Bride.

There are estimates that about 1 in 10 people are left handed. Is
this reflected in fiction? Are left-handers required to act as right-
handers or vice versa? Are left-handed actors discriminated
against?

In many sporting areas (baseball, tennis AFAIK), left-handers have
an edge and are well represented because most people (including
left-handers themselves) are more familiar with playing against a
right-handed player. Would this also be the case with fighting
prowess? If so, wouldn't that make lack of representation of left-
handers in fiction involving successful fighters more anomolous?
(Though a character being successful due to handedness rather
than having extra skills up one's sleeve may be boring).

Most of the characters in XWP are right-handed, aren't they? What
about the actors / actresses for XWP?

Have they misrepresented any historical characters with respect to
handedness? :P

Andjam