sharp, sometimes a shallower angle will split easier though.
sure their will be less of the blade touching the wood with the cg, but the coating will add a lot of friction, and sometimes wood will not split until the very end, in which case the steeper angle just makes it harder to drive through.

thats what I have found.
but every wood splits differently.

oh btw: how much more lateral strength could you need! 1/4" thick sr77 isn't breaking anytime soon!
<img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />