i don't know str or dex i want go farm oly + make good dmg on pvp. and say about 16 ap what side make first what take
if you want to do good dmg then go for str, berserkers rage from dual class, and dmg from warrior tree. olympiad full con, full hp from dual, and hp from ap.
dunno what to say about this but a good eviscerator who knows how to play it can evade normal attacks, skill attacks and debuffs almost permanently, not to say that he is abled to cancel the opponents target every 1.5 - 2 seconds so full con is useless cause you aint a tank to stand and take the hits, you need to aply the hits.
for doing dmg you got steel mind, and 2 skills: 1st ignoring 50% of p def and 2nd ignoring shield def (vs tanks). also its not like eviscerator is invincible, without sonatas he still got 1 sec gap. its hard to win vs stacked chars. eviscerator is like a tyrr, if you can afford top gear just go for str, while if you cant afford that, simple go for hp.
10 players 10 different play styles. i prefer a combination of dex and str cause i like it offensive. for me eviscerator is a combo style class using his skills to avoid beeing targeted, stunning, knock back/down using fluid weave for not beeing harmed all în witch i inflict dmg. i love touching and not beeing touched. steel mind is easy to be evaded so i do not relly on it only on different circumstances.