Hey, man, what’s up?
Well, you certainly could use Pokémon in a Allies as Loot context! (I did it myself in a non-ICRPG Pokémon game)
I picture it as using a weedle to shoot web strings to carry you around as a grappling hook, make a golbat hold you and carry you around like a short-term flight, or hop up on a blastoise and shoot its water cannon at grunts. However, Allies as Loot assume the allies/creatures/etc are components of the main hero, bonuses and extras without stats. I think a Pokémon campaign, traditionally, should take the opposite route and have the Pokémon as fully fledged characters, as important as the Trainer.
But for this conversion, I though about writing a Pokémon Trainer class and stating Pokémon for use in individual battles. But your idea is great and now I’m thinking there’s nothing stopping us from having both - when the Trainer is the focus of the scene, Pokémon functioning as support, but when Pokémon are the focus the Trainer takes a back seat.
Thanks for the comment and ideas!
EDIT. Btw, I will be expanding and updating the drivethrurpg version of Allies as Loot this week. As always it’s free/pwyw, so be sure to check it out by this time next week for expanded rules and effects.