[RPG] When adapting a setting to 13th Age, how to decide what is an Icon

From the Escalation V6 rules, page 197, under Two Weapon Fighting.

You fight as normal, generally using the weapon in your main hand to attack. If your attack roll is a natural 2, you can reroll the attack but must use the reroll. If it suits the story of how your character fights, go ahead and use your off-hand weapon for this rerolled attack, but you don’t have to do that unless you want to.

The Fighter has the Power "Two Weapon Pressure" as well. However, the Ranger is to go-to guy for dual wielding.

The advantage for two weapon fighting as a Fighter is that you have a 1 in 20 chance of re-rolling an attack, plus on a miss, you get a +2 attack against the same target next round (if you pick Two Weapon Pressure). The downside is you lose AC from not having a shield. (Two Weapon Pressure is a level 1 Power, and it triggers on any miss, so maybe it's good enough to compensate for a lack of shield)

The question will be a real issue in case of multi-classing, since Combat Boon is a Cleric's power, while only Fighters and Bards have flexible attacks.

My conclusion is:

Flexible attacks are not basic melee attack

Hence, you can't use Combat Boon with Flexible attacks, but I would rule Hammer of Faith as "yes" because it is a passive buff, and because it's a Daily. The game goes out of the way to make Daily powerful (transparent targeting being the first thing I can think of).

My reasoning is base on the text for hampered, page 172 of the rule-book.

You can only make basic attacks, no frills...(Fighters and bards, that also means no flexible attacks) [Emphasis mine].

Also, additional attacks per turn granted by powers or talents (the Fighter's Counter Attack, for instance) cannot be used as triggers for flexible attacks. This reinforces that the two (basic attack, and flexible attack) are two different beasts.

Hence, I guess the intent of the rules is for flexible attacks to be considered as powers with a chance of triggering depending on the dice roll. Essentially, I guess my stance is "only one effect from one attack" - which I would argue it's the rules' intent because you can only trigger one flexible attack per trigger, despite being eligible for more than one.