My vote is for
share. I think there's always room for
"pure perl" modules to sit aside their xs cousins. There are
bound to be lots of people in a similar situation to you.
I can think of 2
examples right now that are in CPAN:
If you do publish to CPAN, I think you should probably notify the
author of the original module (just so he doesn't stubmle
into yours and become surprised) and name your module similarly,
but distinctively diffrent from its xs cousin (I think the
_PP standard
used by the 2 modules I refrenced above is good).
