First off, I generally LOVE my PuG. EVA Tank is about the funnest thing.
As a R46 PuG, I have 2 main ways of playing and using this and that ability. Both I use the same equipment for: got +1 Toadskin Harness, minus changes in rings and earrings. I use Silver earrings and DEX rings when tanking, and STR and DEX rings when DD'ing. Both I have more or less alotted the same attribute points into, pretty even throughout.
I have also ranked most WAR and both MAGE jobs to 20 for the extra insurance when I solo stuff from time to time. I use Buff abilities and misc abilities (Quickstride) on my second bar from 11-16 usually.

EVA tank:
1: Light Strike
2: Pummel
3. Aura Pulse
4. Follow Through
5. Raging Strike
6. Featherfoot II
7. Presence of Mind
8. Changes between Taunt II for parties and Ferocity solo. Bumps to 6 and FII and PoM get brought up one spot.
9. Sacrifice II
10. Second Wind II

I keep only what I need on my 1st action bar. As I realized playing that most fights take 45sec-90sec or so. I usually alternate between pummel and light strike to keep the buff going, splashed in with some DD, featherfoot and healing in between to keep myself alive.

Damage Dealer:
1. Heavy Strike
2. Flurry
3. Follow Through
4. Ferocity
5. Hawk Eye
6. Aura Pulse
7. Raging Strike
8. Concussive Blow II
9. Blindside II
10. Discerning Eye

Generally on leves, I find that mobs go down in roughly 20-45 seconds. I try to spread out my WS' and Damage buffs to utilize them as much as possible in a short period of time. This is specifically to deal as much damage as possible and nothing more.
If I have to offtank I usually just switch to EVA tank mode.

I've died some, i've lived many. This works for me at the moment as I do not like to clog up the bar and with the short time period it takes to down a mob, I don't feel cloggin up all bars with everything is a must.

On a side note, I haven't done many NMs really. I know the fight goes MUCH longer so I imagine I most likely would put a few extra Damage buffs on the 2nd bar and transfer self buffs to the 3rd bar. I just do not like the lag in switching between bars during battle.

Hope ya'll have been enjoying PUGs too!