most people will tell you to go pure str. After all, its tried and true, does well as a tanking char even if u use glaive, and the crit dmg is very high. Adding a bit more int you gain a little more damage (I'm fairly sure), but you lose hp and your critical damage is slightly less.
I'd stay pure str glaive, simply because I don't know about the other one much from personal experience and pvp, and although I've always wanted to try str hybrid spear I know I will never have the time for str builds.

Though I believe Anh_Thu (not so sure but I think) and _SunTzu_ of Venice (_SunTzu_ = inactive, don't know about Anh_Thu) are str hybrids and they did very well.

Anh_Thu was widely regarded as the best in the server and _SunTzu_ often managed to beat pure strs multiple lvls above him.
Leaning towards pure str but I'm not as radical about it as some people are. I personally would definitely try out a str hybrid to see what all the fuss is about, and if having good equips can make you be pretty good, but if you haven't tried any build yet or haven't dueled many pure strengths pure strength can definitely be a fun way to go

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