I have to disagree with you on this point. Summoning, as we have examined in depth
ad nauseum on these forums, has a two part process. Declaration and, although I don't like this phrase, resolution. Where are we told that paying to Summon something constitutes actually summoning it from the perspective of any effects in play?
Imagine, if you will, an Effect Monster with the same effect as
Chain Energy. Would we then be concered about the payment of both effects if Hamon required you to offer the monster as tribute instead of the Spell Cards? I don't think we would. I think we would be saying that the monster is not on the field when the tribute is payed for. We would see the monster as no longer in play when when Hamon's summon is payed for.
And why not? You can offer a monster on a full field as a tribute for another one, even though the field is full. I realize that a full field is not the same as a payment effect, but there is still fundamental logic there. I don't see why paying for a summon is the same as summoning. I think if there is a point between the tribute and the summon where the whole process can be negated, then if anything happens to
Chain Energy in that point it isnt on the field for its effect to demand payment. There is an order. And it's dictated by mechanics.