Theory Crafting - Shield Brawler

I would like to know if anyone has actually made one. A pure agi or agi + vit Brawler who uses shield instead of dagger and heavy armor instead of light armor.
Is it better than the traditional Brawler? How does it feel.
Anyone who had tried before please share your thoughts. Thank you so much.

Data: Based on my lv 50 pre agi Brawler
Changing light armor to heavy armor:

Flee dropped from 374 to 211.
ASPD dropped from 1428 to 818.
Doesnt seem really worth switching because brawler really depend on those ASPD.

Update: What is we keep using light armor but change dagger to shield only.

Switching out dagger lose 10% evasion and 3 dodge
Using Shell Shield: GrdRate+24% GrdPwr+12% PhysResist+2% Aggro +1%

ASPD dropped from 1428 to 1018.

Adding *4 excavated golem xtal: Guard rate+5%, Guard power+5% = Guard rate+20%, Guard power+20%
Subtracting *4 Forest Wolf xtal: 24 Dodge, 8% evasion.
= 44% guard power + 32% guard power - 27 dodge - 18% evasion.

So, we lose18% evasion for 44% guard chance. At the same time we do also lose 400 ASPD. I dont know if it is ever worth switching.

Keep using Dawn hat, volcanic claws. light wolf's garb.

Conclusion: it seems a bad trade.

 

I'm a shield-curious brawler myself and you're numbers confirm my thoughts.

There is however a shield skill Shield Mastery- enhance attack speed when equipping a shield. A trip to the library and sacrificing 10 much beloved skill points to mitigate the problem would be a poor value. If skill lvl 10 'BETTERS' that much depended ASPD over dagger, might be worth it.